In the drugstore or pharmacy is certainly a lot of pregnancy test kits sold. Whether it's through the detection of the hormone that indicates if you are pregnant, hCG (hormone levels) in the urine, or your urine. But you should still see a doctor to get more certainty about your pregnancy. If you are not pregnant, you still have to go to the doctor to ask why you are not pregnant!

What makes the accuracy of the results of a pregnancy test?

* Use. The National Institute for Women's Health and Information Center says that a private home pregnancy test, if used correctly will give accurate results. To obtain accurate results, follow the instructions given to perform the test. Then find a match for the results shown by the example in the instruction sheet. Be careful with the assay of-date.

* Time test. Accurate or not the results will depend on when you do the test. When you are pregnant, the hormone human chorionic gonadotropin (HCG) produced by the body to be detected at least 6 days after fertilization. The amount of hormones contained in urine may initially only slightly, but the day will increase more and more numbers in the urine. Within one week later than the schedule coming months, these hormones can be detected by pregnancy tests are personal.

If you take the test early in pregnancy (hormones are still a little in the urine) could have shown negative results, when you're pregnant (supposedly positive result). This occurs in about 10 percent privately at home pregnancy test. If you use a test a few days through the month of your future, and the result is negative, try to repeat a few days later to give a chance accumulation of more and more of the hormone hCG in urine. We recommend that you perform this test in the morning, because the hormone it will accumulate more in the morning.

* Variations. Every woman's body has its own differences. The amount of hCG hormone also differ in their body. The results of home pregnancy tests may be personally very accurate for some women, but not so accurate for others.

* Brand. Other brands, others are also ways to detect pregnancy. There is a very sensitive detection, so that small errors in the use can interfere with test results. But some are not.

* Sign a false positive or negative. Almost none of these events, as reported by the Mayo Clinic. The test results may be wrong as it may be mixed with water in your urine, blood or other fluids that can give a false test results.