Pregnancy testing

Myth: The pregnancy test was positive; it probably a false-positive result.

It is uncommon for a home pregnancy tests to be wrong.  However some reasons why there might show an inaccurate result are.

False Positive can happen if:

  • Contaminated urine cup (for pee and dip tests). There could be detergent on it, or dirty finger prints.
  • Faulty test (for example, the kit is damaged, past its use-by date or has been exposed to heat or moisture).
  • If you have blood in your urine – it might be from cystitis, for example.
  • Protein in the urine – it could be kidney damage, for example.
  • Certain medications including  anti-convulsants, some fertility drugs, diuretics (fluid pills) and tranquillizers
  • Recent birth or miscarriage, because a woman’s blood and urine may still contain detectable levels of hCG (the hormone used to detect pregnancy) for a few weeks afterwards.
  • An ovarian tumour or some other type of hCG-producing growth

If you are worried that your pregnancy test is a false positive, please see a doctor.

 

Myth: My tests were negative and yet I still feel strange.

Occasionally home pregnancy tests (HPT) can produce a negative result when the woman IS pregnant. Some reasons for this are:

  • You may have tried the test too early (before or just as your period is due) and hCG levels are too low to be detected.
  • The test is incorrectly timed. Use a kitchen timer or a watch with a second hand to be sure.
  • The test is used incorrectly.
  • If you drink lots of fluid before taking the test it could dilute your urine to the point where hCG (the hormone used to detect pregnancy) levels are no longer detectable.

 

Myth: The home pregnancy test says I can test early - I did that and it was negative.

Lots of tests say that they are the first to detect, or you can test early. The most reliable time to test is after you have missed your period. This is when your body should have sufficient hCG to read on a test. If you test too early, you may get a false negative.

Last edited on: 

Wednesday, January 20, 2016