Pregnancy Test Results Factors
There are a number of factors that go into determining how early a pregnancy test will be able to get you a positive result. The fact of the matter is that it takes some time for your body to build up enough hCG (the pregnancy hormone) so that it can be measured by a pregnancy test. In addition, there are other factors that go into determining just how quick pregnancy test results will be.
Here are some of the pregnancy test results factors that you should be aware of:
- Implantation timing. A home pregnancy test looks for hCG in your urine. It takes a while for the hCG to get there. Once you have a fertilized egg, it has to travel through the fallopian tubes into the uterus. That trip in itself takes about a week. The fertilized egg then has to attach to the uterine lining. That can happen anywhere from about six to 12 days after the egg is fertilized. From there, the production of hCG starts. It takes about four to six days after implantation for hCG levels to be high enough in your urine to be detected on a pregnancy test.
- Urine concentration. Throughout the course of an average day, the concentration of hCG in your urine is going to change. Your urine can become diluted or it can become concentrated, depending on how much fluid you take in. The best time to take a pregnancy test is when your urine is very concentrated. That’s why many home pregnancy tests recommend that, for the most accurate results, you should take the pregnancy test in the morning.
- Test sensitivity. Some pregnancy tests are more sensitive than others. The lower sensitivity level, the earlier you’ll be able to detect a pregnancy. So, for example, a pregnancy test that can test at 20 mIU/ml will give you an earlier result than a test that has a sensitivity of 50 mIU/ml. Most pregnancy tests will indicate on the packaging how sensitive they are. Overall, a more sensitive pregnancy test is likely to help you get a positive result as many as two days before a less sensitive pregnancy test.
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