Q:

Can a pregnancy test be reused?

A:

Quick Answer

Home pregnancy test kits are designed for a single use and cannot be reused. The home pregnancy test has a special platform that is treated with an antibody that will bind with the hormone HCG in a pregnant woman's urine; if the hormone is present, a change will occur in the testing window. This is usually a color change created by a pigment molecule that is only triggered by HCG to form a line, according to About.com.

Continue Reading

Full Answer

The pregnancy hormone is more concentrated in early morning urine, which is why most tests come with the caveat that the most accurate results are achieved if the test is taken with morning urine. Most women produce enough HCG on the sixth day after conception to trigger a positive test result, although this is not always the case.

Learn more about Pregnancy
Sources:

Related Questions

  • Q:

    How long after conception does a blood test show a positive pregnancy result?

    A:

    According to About.com, a blood pregnancy test can detect the levels of hCG and show a positive pregnancy result approximately 8 to 10 days after conception. HCG stands for human chorionic gonadotropin, which is a hormone secreted during pregnancy.

    Full Answer >
    Filed Under:
  • Q:

    How soon can a woman tell if she is pregnant?

    A:

    According to the American Pregnancy Association, a blood pregnancy test can detect pregnancy 7 to 12 days after conception occurs, while a urine pregnancy test can detect a pregnancy approximately two weeks after conception. For a blood pregnancy test, any HCG level greater than 25 milli-international units per milliliter is considered to be positive. The level of HCG required by a urine pregnancy test is anywhere from 25 to 100 milli-international units per milliliter.

    Full Answer >
    Filed Under:
  • Q:

    What do two dark blue lines on an Accu-Clear pregnancy test mean?

    A:

    According to Negative Pregnancy Test, two dark blue lines on an Accu-Clear pregnancy test mean that the woman who took the test is negative for pregnancy. There are two screens and the first line means the test is working. The second shows the test was negative.

    Full Answer >
    Filed Under:
  • Q:

    Does brown spotting mean I'm pregnant?

    A:

    Brown discharge does not automatically indicate pregnancy, but if it occurs slightly before a regular menstrual cycle and there is a possibility of pregnancy, a pregnancy test should be taken, according to What to Expect. A brown discharge, called implantation bleeding, is a common occurrence 10 to 14 days after ovulation when the fertilized egg attaches to the uterine lining.

    Full Answer >
    Filed Under:

Explore