The working of a pregnancy test is by the detection of the HCG amount .It is also known as the Human Chorionic Gonadotropin. This may be detected in the urine of a woman or through a blood sample. There is a rise in the levels of these hormones. Then there is an implantation of embryo in the womb. The occurrence is found 6 to 12 days after the egg fertilized. The formation of these hormones is seen generally 10 days after conceiving. Thus, if there is performance of home pregnancy test, detecting of pregnancy week by week is very much possible through this method.
The urine test can be performed privately at home. A kit for testing pregnancy can be brought. They are available very easily at all local medical stores. The instructions and illustrations should be followed very carefully on the strip. This will help in giving various accurate results. The results will be obtained very instantly and that too within just few minutes. Generally, there is accuracy of these results. However, false negatives can also be generated.
Given below are various reasons for negative results:
1. A woman might not be pregnant
2. It is used too early after the period is missed and before the formation of the HCG hormones
3. Ovulation is done at a date later than what was expected
4. The HCG levels are very low.
Blood pregnancy test
The levels of HCG in the blood are measured. This is instead of the urine. Lesser hormones are measured in the blood. They may also be used for the detection of pregnancy. This is usually quicker than the urine tests. Usually after 6 to 8 days of ovulation, these tests are done. However, a woman cannot do this test at home. A doctors help is needed for performing this test. Blood is drawn into a test tube. The sensitivity is more than the urine test. The measurement of the HCG hormones is done by the blood test both quantitatively as well as qualitatively. The presence of hcg hormone is determined by qualitative testing. Usually these tests are done 10 days after the period is missed. They help in the identification of tubular pregnancy.
There are many pregnancy test kit in India. They also help in determining pregnancy week by week. Given below are various products available in the market of India
1. Dr. Reddys Velocit
2. Clear View
3. Cadilas Acutest
4. Akon Kit
If the pregnancy test is negative, it must be done again after 72 hours.