What Does A Urinalysis Test Detect

Have you ever wondered how anti spam software works or what kind of spam filter is used? How does anti virus software detect viruses?

Anyone who has a Gmail account or uses a business email knows that most of the unwanted email, such as spam or virus-laden email is filtered out. Have you ever wondered how anti spam software works or what kind of spam filter is used? How does anti spam software detect viruses? Often, ordinary users don't bother to learn these aspects of email. This is knowledge that can be very useful and informative.

Sniffing out spam

There are two basic methods that a spam filter uses to detect and remove spam. The first is heuristics. This is a learning system that allows the anti spam software to predict which message is spam. This system relies on feedback from the user to check the quarantined messages and tell the system which is or is not spam. The details behind heuristics are rocket science and are not perfect. Without the feedback, the system is much less effective.

The group spam filter

The second method that a spam filter will use is much like crowd sourcing; large numbers of users will mark email as spam in their anti spam software. A central repository will keep records of this information and analyze it to track the sources of the messages by email address, IP address, company or sender name, or other identifying data. Future emails from those sources are then considered spam.

The one-two punch

The most effective anti spam software will use both of these methods to increase the accuracy of the spam filter. This is part of how Gmail and other large systems work. In many cases, anti spam software that is distributed to individual users will share spam filter information, with permission, to the central repository to provide updates for future versions of the software.

Anti virus immunology

Anti virus software is much more important. Spam will, at best, annoy a user, or worse; a virus can destroy a system or a whole network. Much like the body's immune system, anti virus technology relies on antibodies in the form of a virus definition file. This file has data patterns of known threats to scan for as the email is retrieved. It then quarantines the message . Additionally, newer systems will use heuristics to predict whether a message contains a virus in the event that there is no filter definition.

Frequently Asked Questions

  1. QUESTION:
    Urinalysis test detecting?
    Do urinalysis tests detect marijuana? If so, how long of a time period is necessary to wait after using marijuana for the urinalysis test to show up negative.

    *health/DARE project. There is no good information i can find on the web.

    • ANSWER:
      Urine drug testing isn't the same thing as a urinalysis. So if I'm to interpret your question exactly as worded I have to say no, urinalysis does not detect marijuana. The second question does not apply because of the answer to the first.

  2. QUESTION:
    How can proteins be detected in urine?

    • ANSWER:
      Through exams done in the clinic and hospital!

      Urinalysis is testing of the urine. A urine sample is usually collected using the clean-catch method or another sterile method. For example, a method to obtain an uncontaminated urine sample involves passing a catheter through the urethra into the bladder.

      Urine Analysis

      Obtaining a Clean-Catch Urine Sample

      The head of a man's penis or opening of a woman's urethra is cleansed, usually with a small pad that contains an antiseptic substance.
      The first few drops of urine are allowed to flow into the toilet, washing out the urethra.
      Urination is resumed, and a sample is collected from the stream into a sterile cup. Usually the sample is obtained before the stream ends (mid-stream).

      Urinalysis can be used to detect and measure the level of various substances in the urine, including protein, glucose (sugar), ketones, blood, and other substances. These tests use a thin strip of plastic (dipstick) impregnated with chemicals that react with substances in the urine and quickly change color. Sometimes, the test results are confirmed with more sophisticated and accurate laboratory analysis of the urine. The urine may be examined under a microscope to check for the presence of red and white blood cells, crystals, and casts (impressions of the kidney tubules created when urinary cells, protein, or both precipitate out in the tubules and are passed in the urine).

      -----Protein in the urine (proteinuria) can usually be detected by dipstick. Protein may appear constantly or only intermittently in the urine, depending on the cause. Proteinuria is usually a sign of kidney disorders, but it may occur normally after strenuous exercise, such as marathon running.------

      Glucose in the urine (glucosuria) can be accurately detected by dipstick. The most common cause of glucose in the urine is diabetes mellitus, but absence of glucose does not mean a person does not have diabetes or that the diabetes is well controlled.

      Ketones in the urine (ketonuria) can often be detected by dipstick. Ketones are formed when the body breaks down fat. Ketones can appear in the urine from starvation, uncontrolled diabetes mellitus, and occasionally after drinking significant amounts of alcohol.

      Blood in the urine (hematuria) is detectable by dipstick and confirmed by viewing the urine with a microscope and other tests. Sometimes the urine contains enough blood to be visible, making the urine appear red or brown.

      Nitrites in the urine (nitrituria) are also detectable by dipstick. High nitrite levels indicate a urinary tract infection.

      Leukocyte esterase (an enzyme found in certain white blood cells) in the urine can be detected by dipstick. Leukocyte esterase is a sign of inflammation, which is most commonly caused by a urinary tract infection.

      The acidity of urine is measured by dipstick. Certain foods, chemical imbalances, and metabolic disorders may change the acidity of urine.

      The concentration of urine (also called the osmolality or specific gravity) can vary widely depending on whether a person is dehydrated, how much fluid a person has drunk, and other factors. Urine concentration is also sometimes important in diagnosing abnormal kidney function. The kidneys lose their capacity to concentrate urine at an early stage of a disorder that leads to kidney failure. In one special test, a person drinks no water or other fluids for 12 to 14 hours. In another test, a person receives an injection of antidiuretic hormone (also called vasopressin). Afterward, urine concentration is measured. Normally, either test should make the urine highly concentrated. However, in certain kidney disorders (such as nephrogenic diabetes insipidus), the urine cannot be concentrated even though other kidney functions are normal.

  3. QUESTION:
    Urinalysis Test Question!!! HELP!!!?
    First -- Is a urinalysis the same as an ETG? I know an ETG is more strict and can find traces of alcohol within 80 hours. But is a urinalysis a different test from the ETG? If so -- how long can it detect alcohol?

    Second -- I totally forgot I had a urinalysis. I am a 19 year old male, 6ft tall, 160 pounds. On Saturday Night, I had 4 beers within 2 to 2.5 hours and stopped drinking by 12 am. I took my test today, Tuesday at 6pm. I usually drink many fluids everyday -- OJ, milk water, V8, etc. I have a very good diet and take vitamins everyday. I even worked out the day before pretty hard, and got a good sweat in. Before my test, I drank around 70 oz of water as well and my pee was clear. I know it's within 80 hours... but is it possible that even though I was around 66 hours I'll be okay?
    Took my test YESTERDAY** (Tuesday) at 6pm

    • ANSWER:
      ETG is a kind of enzyme found in urine, I forget what it stands for (some big sciency wording) but it only occurs when you drink alcohol and your liver has to process it. Its remarkably accurate for around 72 hours, give or take depending on how much you drank.

      What you're misunderstanding is the difference between a urinanalysis (UA) and ETG. "ETG" is not a seperate kind of test. Its what they are actually looking for by giving you a UA to find out if you have been drinking.

      Body composition is not as important because even if you did not get drunk your body still produced the enzyme ETG in similar amounts to any one smaller or larger than you are.

      Bottom line is last time you drank was 12 am Saturday. That means you had at least 60 hours before your UA. Even though you only had 4 beers in a short amount of time, it is still very possible that they could detect ETG in your urine. Like I said, this kind of test is really accurate. So much so that in many cases they can tell within the hour the last time you drank. My guess is your are ok - this time. So don't push your luck next time.

  4. QUESTION:
    How long does marijuana stay in your system for?
    I only smoked once on sept. 2, 2011 and it was my second time smoking since july. I'm approximately 118 lbs & my height is 5"2.

    • ANSWER:
      Contemporary urinalysis tests that employers find affordable as part of pre drug screening can detect the accompanying chemicals for approximately 30 days.

      Hair tests can detect it for years depending on how frequently you cut your hair but these are the most expensive tests and infrequently used.

      Your metabolism and level of physical activity has more to do with how long your body retains the chemicals, body weight and height have little to do with how long the trace chemicals remain.

      If you are concerned about your usage being detected as a preemployment screening, it will depend more on how much money the prospective employer spends in their drug screening.

      More often, job candidates are subjected to a rudimentary inexpensive type 2 test that can produce results instantly and typically designed to detect usage within the prior 15 days. When these tests turn up positive, it doesn't necessarily indicate marijuana usage but will be used to determine if your specimen sample should be sent away / subjected to the more expensive type 3 or type 4 lab exam that is designed to detect usage in the last 30 days.

      Scalp and body hair can retain usage for a seemingly indefinite period but won't necessarily indicate short term usage since smoking a bowl yesterday would only deposit trace chemicals in first the hair follicle and root and require days or weeks before it grows out to the external hair past the skin. Hair tests typically require the plucking of same scalp hairs and often from the crown of the skull but a user could hypothetically escape detection by hair if they smoked the morning of the test appointment.

      The most comprehensive test is a hair and urine test but it is the most expensive, blood tests aren't effective in exhibiting marijuana usage unless in the past 12 - 24 hours and most often only the past 12 since the trace chemicals have been expelled by the blood and are now left in your tissues for expelling through urine.

  5. QUESTION:
    can an urinalaysis test detect yeast or any type of std? i know they check for different bacteria...?

    • ANSWER:
      A urinalysis is not for detecting STD's.

      This kind of test is primarily used to check for early signs of disease, monitoring diabetes, kidney disease, urinary tract infections or blood in the urine.

      It's not painful. All you have to do is pee in a cup, then it goes to a lab.

      If anyone told you that a urine test can detect Clamidiya or any other type of STD, THEY ARE WRONG. Only a nucleic acid amplification test, http://www.blood.ca/Web/cbswebtest.nsf/resources/PDF/$file/general_Document.pdf (which is a blood test,) can find that or a pap smear, or by eye sight.

      Urine tests are not elaborate enough to detect STD's.

      A high white blood count or leukocytosis could mean any of the following:
      TRACES OF infectious diseases (West Nile, Malaria, Rabies,Hepatitis B )
      inflammatory disease (such as rheumatoid arthritis or allergy)
      leukemia
      severe emotional or physical stress
      tissue damage (for example, burns)
      anemia

  6. QUESTION:
    What is a urinalysis?
    I have to get a urinalysis on Tuesday as part of enlisting for the marines. Is this the same thing as a drug test?

    • ANSWER:
      A urinalysis (or "UA") is an array of tests performed on urine and one of the most common methods of medical diagnosis.[1] A part of a urinalysis can be performed by using urine dipsticks, in which the test results can be read as color changes.

      Examples of tests
      In addition to the substances mentioned in tables below, other tests include:

      1) Icotest - The test used to detect the destruction of old Red Blood Cells (RBC) in the urine.
      2) Hemoglobin Test - Hemolysis in the blood vessels, a rupture in the capillaries of the glomerulus, or hemorrhage in the urinary system may cause hemoglobin to appear in the urine.
      3) hCG - normally absent, this hormone appears in the urine of pregnant women. Home pregnancy tests commonly detect this substance.

      Microscopic examination
      The numbers and types of cells and/or material such as urinary casts can yield a great detail of information and may suggest a specific diagnosis.

      1)Hematuria - associated with kidney stones, infections, tumors and other conditions
      2) Pyuria - associated with urinary infections
      3) eosinophiluria - associated with allergic interstitial nephritis, atheroembolic disease
      4)Red blood cell casts - associated with glomerulonephritis, vasculitis, malignant hypertension
      5) White blood cell casts - associated with acute interstitial nephritis, exudative glomerulonephritis, severe pyelonephritis
      6) (heme) granular casts - associated with acute tubular necrosis
      7) crystalluria -- associated with acute urate nephropathy (or "Acute uric acid nephropathy", AUAN)
      8) calcium oxalatin - associated with ethylene glycol toxicity

  7. QUESTION:
    Will a urinalysis and blood tests always detect signs of kidney problems?
    i get bubbles in my urine almost every time so i went to the doctor and i gave in my urine and blood (I needed a check up anyway) and everything came out ok. if i had any problem with my kidneys would those tests detect it?

    • ANSWER:
      definitely yes. but you can also take a blood test to certify your health. generally if you are going urination without problems then you have no signs of kidney failure.

  8. QUESTION:
    how long can marijuana be detected in a urinalysis test?

    • ANSWER:
      If you frequently use Marijuana then at urine drug test
      THC by-product: 14 days- 30days after smoking.

      If you use Marijuana occasionally then at urine drug test
      THC by-product: up to 10 days after smoking

  9. QUESTION:
    Pediatrician's Urinalysis Test?
    i had a routine physical at my pediatrician, (I'm seventeen.) and i had to pee in a cup to test cholesterol and all that. I drank a little the night before (like 3 shots max) so will that show up in the test? and if so will they tell us about it in the results?

    • ANSWER:
      Urinalysis can disclose evidence of diseases, even some that have not caused significant signs or symptoms. Therefore, a urinalysis is commonly a part of routine health screening.

      Urinalysis is also a very useful test that may be ordered by your physician for particular reasons. Urinalysis is commonly used to diagnose a urinary tract or kidney infection, to evaluate causes of kidney failure, to screen for progression of some chronic conditions such as diabetes mellitus and high blood pressure (hypertension).

      It also may be used in combination with other tests to diagnose some diseases. Examples of this include kidney stones, inflammation of the kidneys (glomerulonephritis), or muscle break breakdown (rhabdomyolysis). Additional tests and clinical assessment are often required to further investigate findings of urinalysis and ultimately diagnose the causes or specific features of underlying problems. For example, urine infection is generally diagnosed based on results of urinalysis. However, urine culture is often ordered as a follow-up test to identify the bacteria that may be causing the infection.
      In the average person healthy male alcohol can be detected in the
      urine anywhere from 1 to 12 hours after the last drink is consumed. A
      person's blood alcohol concentration (BAC) normally decreases at a
      rate of about 15 to 20 mg/dL per hour, or, in other words, it tends to
      decrease at a rate of about one drink per hour. As a rule then, five
      drinks takes about five hours to eliminate ? depending of course on
      how much alcohol was in each drink and how rapidly the drinks were
      consumed in succession (among other factors). Now this may seem like a
      fairly wide estimate but there are too many factors involved in each
      individual, each drink consumed, etc. to pin it down much closer.
      Knowing what I know from two decades of enforcing the law however (and
      I?m sure you will agree), I can tell you that people who drink
      recreationally don't normally drink for one hour. So, generally
      speaking, it is safe to say that alcohol staying the system for about
      12 hours following the last drink unless the person is on a chronic
      alcoholic or on some kind of binge, in which case it may even be
      longer. I must assume though, for the sake of your question, you are
      talking about a regular guy with normal discretion and no alcohol
      problems, who chooses to have a reasonable number of social drinks on
      occasion.
      A blood test is required for cholesterol.

  10. QUESTION:
    Can urinalysis show HIV?
    I had a urinalysis test a month ago and it was normal. If i have HIV i contracted it up to 3 years ago. I am really worried. I am going to the nurse tomorrow and will ask her to do a blood test. Will that show a positive result if i have it? Thank you

    • ANSWER:
      Standard urinalysis does not look for HIV, however, there are HIV tests available that use urine as specimen.

      A test that detects HIV antibodies in urine was approved by the FDA in 1996. This test is not generally available to consumers. It is usually marketed to insurance companies and to other countries.

      Note: HIV is NOT transmitted by urine, but it does contain antibodies to HIV that a test can look for.

      Manufactured by Seradyn, it is called the "Sentinel" test.

      A sample of urine is tested at a certified lab, using a modified ELISA procedure. This test must be ordered by a physician; this means the urine HIV test, by definition, is confidential, not anonymous.

      Because it is less sensitive than a blood test, positive results must be confirmed by a traditional blood sample (ELISA plus WB).

  11. QUESTION:
    Is this Symptoms of Diabetics?
    Hi,My Grand mother and and Dad both are diabetic patients,and am feeling like smell in my urine and feeling hungry alot.so is this is the symptoms of diabetics.
    Is there any chance of diabetie from mother to son or dad to son..???

    • ANSWER:
      Conduct urinalysis test. If glucose is detected in the urine, then you have diabetes. Glucose is not usually found in urine. If it is, further testing is needed. A glucose test is a type of blood test used to determine the amount of glucose in the blood.
      Drink 15 glasses of water daily.

  12. QUESTION:
    Urinalysis?
    Suppose a urine sample revealed abnormal results, such as protein in the urine. If there is a result differing from the norm (color, pH, subtances present), should the physician always make an immediate diagnosis of a disorder? Why or why not?

    • ANSWER:
      Hello There!
      Here is your answer.
      A Doctor could not give an immediate diagnosis, as the cause of the protein in the urine must be determined first
      I hope all goes well for you! :)

      What is proteinuria?
      Proteinuria is leakage of protein from the blood into the urine. This page explains what protein is, how it gets into the urine and what doctors can do to deal with any problems caused by proteinuria.

      What is protein, and how does it get into the urine?
      Protein is one of the three main types of chemical that make up our body (the others are fats and sugars). Protein is an important part of diet, and is contained in most types of food. Meat and fish contain large amounts of protein. After you eat protein, it is dissolved in the stomach and absorbed into the body. The protein is then modified and distributed throughout the body in the blood. Protein is an important part of the plasma (watery part) of the blood, and the body does not want to lose protein. Therefore, when the body eliminates waste through the kidneys, protein should be kept in the blood stream.

      The kidneys make urine by filtering the blood. Normally no protein passes into the urine when the blood is filtered, because protein in the blood is too large to pass through the tiny holes in the kidney filters. However, the filter can be damaged in kidney disease, so that protein can pass into the urine. The filter in the kidney is called a glomerulus, and many of the kidney diseases that cause nephrotic syndrome are called glomerulonephritis.

      What are the symptoms of proteinuria?
      Normally there are no symptoms, but protein is detected by a routine urine test. The simple test with a dipstick (small plastic strip with a indicator paper attached) can detect very small amounts of protein, so that a positive test may not mean there is any serious problem with the kidneys.

      If the amount of protein in the urine is very high, a condition called nephrotic syndrome may develop. Nephrotic syndrome causes water to build up in the body. The extra water can cause ankle swelling, or swelling in the hand (rings go tight on fingers) or around the eyes. Severe swelling can develop all the way up the legs and around the back. There may be swelling of the tummy or breathlessness due to water around the lungs. Click here for more detail on nephrotic syndrome.

      What are the causes of proteinuria?
      Protein in the urine can be a marker of almost any type of kidney disease, so tests are always needed if the cause of proteinuria is to be confirmed. These are the most common (click on a disease for more information):-

      High blood pressure
      Infection
      Reflux nephropathy
      Diabetes
      Glomerulonephritis
      Minimal change nephritis

      How is the cause of proteinuria diagnosed?
      Further tests may be necessary after protein has been detected by a simple 'dipstick' test on a small urine sample. This dipstick test is very sensitive, but cannot measure exactly how much protein is in the urine. To get an exact measurement, some urine needs to go to the laboratory. This can be done with a single small urine specimen, in which the laboratory measures the levels of protein and creatinine ('protein-creatinine ratio' or PCR for short). A collection of a whole days urine output (24 hour collection) into a container was the standard method for measuring protein in the urine for many years, but is now being replaced by the far more convenient PCR test.

      A PCR of less than 2 mg/mmol is normal. Levels of up to 50 usually do not indicate serious kidney disease, so long as the kidney function (measured by blood creatinine level or eGFR) is normal. However, a PCR of 20-50 in someone who has diabetes will require further action, especially to reduce the blood pressure, improve the control of diabetes and check the blood cholesterol level (Click here for more information on 'diabetes and the kidneys').

      A PCR of 50-300 usually requires some further testing, see the section on chronic kidney disease (Click here). A PCR of greater than 300 may mean that nephrotic syndrome is present (Click here for more information on this syndrome).

      If a 24 hour collection of urine has been performed, the protein level is given as grammes/24 hours. This result roughly equates to the PCR divided by 100; i.e. a PCR of 2 is 0.02 g/24hr; a PCR of 50 is 0.5 g/24hr; and a PCR of 300 is roughly 3 g/24hr.

      The doctor will also take a full history, and check there is no-one else in the family with kidney disease. Several blood tests will be done, and your blood pressure will be measured. The size and shape of the kidneys will be measured in the X-ray department with an ultrasound (sound wave) scan, or an IVU (X-rays of the kidneys after an injection).

      Sometimes, to make a firm diagnosis of the cause of proteinuria, it is necessary to perform a kidney biopsy. This is the removal of a small fragment of kidney using a needle, so that the kidney can be examined under a microscope. Click here for more information on kidney biopsy.

      What are the complications of proteinuria?
      Many people with proteinuria turn out to have minor kidney disease with no problems in the long term, but some kidney disease can progress to kidney failure. Complications depend on the exact cause of proteinuria in each case, so read the information on the condition you have.

      There are some problems which are common in all types of kidney disease with protein in the urine:-

      1) High blood pressure - Kidney disease commonly causes high blood pressure. This increases the risk of further kidney disease, and also the risk of heart attack and stroke. Drugs may be needed to control the blood pressure

      2) High cholesterol - In nephrotic syndrome (very high protein levels in the urine, click here for more details), high levels of cholesterol (a type of fat) may be found in the blood. If the cholesterol level is high over a period of years there is an increased risk of a heart attack. If the nephrotic syndrome is cured quickly, the cholesterol level will go down on its own. However, in some cases where a rapid cure is not possible, drugs to reduce the cholesterol may be needed.

      What is the treatment of proteinuria?
      The underlying kidney disease may be treatable with drugs. The type of treatment depends on the cause. Information is contained in the sections on each individual disease (see above for the types of kidney diseases).

      Water retention can be treated by reducing the amount of salt and water taken in your diet each day. Some cases also require drugs to make the kidneys produce more urine.

      High blood pressure can be treated by reducing salt in your diet, and often with drugs to take each day. A high cholesterol level may be treated with dietary control (eating less fat) and, in some cases, with cholesterol lowering drugs.

  13. QUESTION:
    does protein urine test detect drugs?

    • ANSWER:
      Generally a protein urine test is done as part of a standard urinalysis. A standard urinalysis checks for general appearance (color, clarity, etc.), specific gravity, pH, protein, glucose, ketones, bilirubin, nitrates, leukocytes (white blood cells), and possibly a couple other things depending on the test strip used. Unless the drug you are taking somehow affects your kidney and/or liver function, it shouldn't show up on a standard urinalysis.

  14. QUESTION:
    will alcohol and other drugs be detected in urinalysis, syphilis serology tests?
    hey people just need a simple help
    got the above tests in few days
    not a drug addict
    did smoke hash few days back in very less quantity...half a joint
    had couple of scotch shots today and few days back
    will it be detectd in the above test wich i have in 14days?
    thankyou
    lets say it is for some countryz immigration

    • ANSWER:
      Depends how thorough of a test they do.

  15. QUESTION:
    I have a DUI. Can my urinalysis test detect detox drinks?

    • ANSWER:
      well i work for a program called SATOP. which is prolly the equivalant of the program u have to take. if the DUI is for alcohol, detox drinks dont work. if its for drugs, there is one detox that works. but either way, a urinalysis will show the drinks.

  16. QUESTION:
    Urinalysis 1 detects marijuana?
    My friend smoked marijuana, and he will do urinalysis 1, then he smoked pot, how many days it takes to get out of the drug or the drug will not even appear in the examination.

    • ANSWER:
      That depends on his consumption. Smoking about 0.5 grams of marijuana if you were clean prior to smoking can take as little as 7 hours to metabolize and leave your system, it can also take longer depending on the quantity of THC in the bud. If you're friend is a habitual smoker it can take as long as 90 days to leave his system. Exercise, drink lots of water, and abstain from smoking while preparing or "studying" for the piss test, this combined with a piss clean used properly will pass a simple urinalysis.

  17. QUESTION:
    Can a urine test detect even the smallest amount of alcohol drank?
    What I mean by that is... let me sort of give an example.

    Let's say I drink one glass of wine on Monday. If I happen to have to take a urine test to detect alchol on Tuesday afternoon, will the test be able to detect the one glass of wine? Even if I did not get drunk, or even tipsy?

    What is the smallest amount of alcohol that a urine test can pick up on? Like, can it tell if I drink even one *sip* of alcohol, or will it only be able to tell if I drank alcohol if I get myself drunk?

    • ANSWER:
      Urinalysis is based on a qualitative reaction observed by the lab technician and requires a minimum threshold of the substance being tested to activate. Assuming you only had the equivalent of one alcoholic drink, it would be cleansed from your system in a couple of hours (unless you have some form of liver disease, in which case you shouldn't be drinking at all).

      So, go ahead and have a drink the day before a piss test, just don't get hammered or drink anything 12 hours prior to the test.

  18. QUESTION:
    can a urine test detect kidney problems?
    like a simple urinalysis can it detect any signs of kidney problems?

    • ANSWER:
      The simple answer is: Yes.

      Both a blood and urine test can help detect a kidney problem.
      Further tests thought are needed to make sure.

      A urine test will look for proteins to see if the kidneys are functioning properly.
      A lab will be needed to confirm.

  19. QUESTION:
    could they catch possible diabetes from a urine test?
    I had a urine test done yesterday for a UTI. I don't have a UTI, but is it possible for them to overlook a large amount of sugar in the urine if they weren't specifically looking for it? Or is it more likely that they would have found a problem if it exsisted? thanks

    • ANSWER:
      a urinalysis tests for glucose and white blood cells among many other things. this is usually what they begin testing you for a UTI with, so you should probably be able to find out if there's excess sugar or metabolites in your urine. however to detect diabetes they have specific testing criteria, and they are definative...urine can be inaccurate depending on meds you're on, prior food consumption, etc....best to ask the doc about how to get tested if you're concerned, and if you can check your blood sugar in the morning before consuming anything...meds, drinks, food, etc...and keep a log of it to hand in to him. plus any family history, your current diet, symptoms like dizziness or shakiness, nausea, vomiting if any. hopefully this will help some

  20. QUESTION:
    urinalysis write ups?
    does anyone have links or knows where I could find examples of urinalysis lab experiment write ups - especially using benedicts, biuret reagent and sulphur tests for various diseases

    • ANSWER:
      Try:-
      http://www.labtestsonline.org/understanding/analytes/urinalysis/test.html
      http://www.medicinenet.com/urinalysis/article.htm
      http://en.wikipedia.org/wiki/Urinalysis
      http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=cm.chapter.5417
      http://www.answers.com/topic/urinalysis?cat=health AN EXCELLENT DESCRIPTION OF THE TESTS

      A typical medical urinalysis usually includes:

      a description of color and appearance. A useful guide is to liken the colour of urine to the colours of various beverages starting with water, lemon, whiskey and Guinness.
      specific gravity - normally 1 to 1.030. This test detects ion concentration of the urine. Small amounts of protein or ketoacidosis tend to elevate results of the specific gravity.
      pH - normally 4.8 to 7.5.
      ketone bodies - normally negative (absent)
      protein - normally negative (absent)
      urobilinogen (a colourless product of bilirubin reduction)
      bilirubin (breakdown product of Hemoglobin)
      glucose - normally negative (absent)
      RBC number
      WBC number
      hCG - normally absent, this hormone appears in the urine of pregnant women. Home pregnancy tests commonly detect this substance.
      Pyroluria (excess pyrroles)

      TESTING TECHNIQUES. Urine samples are tested with a variety of different instruments and techniques. Some tests use dipsticks, which are thin strips of plastic that change color in the presence of specific substances. Dipsticks can be used to measure the acidity of the urine (its pH) or the presence of blood, protein, sugar, or substances produced during the breakdown of fatty acids (ketones). A urinometer is used to compare the density of the urine specimen with the density of plain water. This measurement is called specific gravity.

  21. QUESTION:
    Can an ETG Alcohol urinalysis test detect marijuana?

    • ANSWER:
      EtG (Ethyl glucuronide) is a break down product of alcohol metabolism and should not detect other substances.

  22. QUESTION:
    If you add a little bit of water to a urine sample for a drug test, will it be detected?
    My girlfriend recently took a drug test. She tried to go, but couldn't and the doctor got really mad at her because she wasted his time and supplies. She stayed for an hour and a half drinking water. When she could finally go, she didn't go enough to fill the cup. She got nervous and didn't want the doctor to yell at her again so she added a real little bit of water to fill it. Will it be detected?

    • ANSWER:
      Yes, urinalysis test are highly sensitive test and it would appear that the sample was diluted. It would be best for her to just admit to the dilution and return to take the test. If she is taking the test for employment it is important to note that some employers may consider a diluated sample as "positive." Also, if her sample comes back as diluated and positive for any substance it will appear as though she was trying to "beat" the drug test because she knew it would have been positive. If the sample comes back diluated but free from any drug substance she may be able to explain that she diluated the sample and tell why. Some samples show as diluated and not all dilute urine specimens are evidence of drug users trying to cheat the test. There are many reasons for urine specimens to be dilute, including disease states, medical advice, habits of fluid consumption, and types of fluid consumed by normal people living normal lives.

  23. QUESTION:
    Urinalysis drug testing?
    Yesterday at dinner I had a sip - literally, barely a SIP - of beer. Today around 1 pm my class I was drug tested for a class (clinicals at a hospital) and I'm worried that the small trace of alcohol might show up in my urine sample. I know that EtG tests detect even the slightest trace of alcohol, but normal drug tests probably won't...

    So does anybody know what type of test the hospital will probably run? Or what my chances are? I've never smoked in my life, I don't take any drugs, and I don't even drink, I just tried the beer.

    • ANSWER:
      A drug test won't test for alcohol.

  24. QUESTION:
    can urinalysis detect urinary tract infection?

    • ANSWER:
      Urinalysis is an invaluable tool for diagnosing urologic conditions. It accounts for 25-30% of clinical lab specimens and is critical to
      detecting urinary-tract infections (UTIs), which pose a substantial financial burden to the healthcare system with an annual cost of
      more than billion. With growing volume, many laboratories have improved efficiencies by using automated urinalysis systems and
      reflex culture orders screening out unnecessary cultures, improving turnaround times and decreasing costs to the healthcare system.
      Given that approximately 70% of specimens are negative upon culture, automation assists lab technicians to rapidly identify the
      presence of bacteria and prioritize positive samples for culture, organism identification and susceptibility testing while rapidly
      processing those samples that need no further screening. This streamlines the workflow, decreasing unnecessary tests and lowering
      overall lab costs.

      Take care

      BEn Trolled

  25. QUESTION:
    Can a doctors tests detect marijuana?
    When at a doctor's when he tests your lungs with the stethoscope, urine test, and the mouth swab for health insurance thingy, does it show I've been smoking weed? I'm 16.
    Its not a drug test. Just standard tests done during a check up.

    • ANSWER:
      If he's not specifically testing for marijuana no. You should ask what he is testing for cbc, urinalysis, electrolytes, etc. It is doubtful that without reason you would be tested, toxicology screens are pretty expensive.


what does a urinalysis test detect