A pregnancy test is a physiological test done to confirm if a woman is pregnant or not. There are different types of pregnancy tests done to confirm pregnancy. But they principally utilize urine or blood samples for the test.
There are 3 types of pregnancy test:
This are usually done at home or at a doctor’s office. Different diagnostic kits are available and are collectively called home pregnancy test kits or simply HPT kits. Types of HPT kits available in the market are:
In all these tests, a mid-stream sample of the urine is taken in a sterile container and 2-3 drops of the same is placed on the test strip. The test strips or cards contain chemicals that react with the HCG (if present) in the urine sample to produce color in case of a positive result. These test show correct results only after one week from the day of the missed period. In other words they are less sensitive.
This are performed at the diagnostic centre in a doctor’s clinic. This is a very sensitive test and is able to detect very small amounts of the HCG hormone in the blood. Hence it is used as a confirmation test for infertility cases if the urine samples show negative results.
There are 2 types of blood tests to confirm pregnancy
Quantitative or the beta HCG test which not only gives a confirmation as in yes or no, but also tells how much of the hormone is present, which enables the doctor to determine the length of pregnancy.
Qualitative test gives only a confirmation report without any supportive data.
The best advantage of blood test for pregnancy is that they are effective even on the first day of conception.
For pregnancy test is done by a qualified gynecologist at the clinic. It involves insertion of two fingers into the vagina so as to check the cervix. It helps to check the size of uterus, ovaries and the fallopian tubes that increase in size during pregnancy. But this examination is done only after 6 to 7 weeks of a missed period.