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Pregnancy test (urinary hCG)

Human chorionic gonadotropin (hCG) is a hormone produced during pregnancy. It is made by the placenta about 6 days after fertilization. It is generally detectable in urine 12 to 15 days after ovulation.

Pregnancy tests vary in their ability to detect hCG in urine. For the most accurate result, it's generally best to wait until you miss your period before taking a test. However, some tests may show a positive result sooner.

What is the purpose of this test? This test is performed to detect pregnancy.
How to prepare? Here are some tips to follow:
  • Test your first morning urine. It has higher levels of hCG, which increases the accuracy of the test.
  • Avoid drinking a lot of fluids before the test to avoid diluting the hCG in your urine.
  • Check that the test isn't past its expiry date.
How is it done?
  • This test requires a urine sample.
  • Pregnancy kits sold at the pharmacy all have different instructions. It's essential to carefully read and follow the instructions for the test you choose.
Possible results
  • Positive or negative
Associated tests An hCG blood test may be performed at a lab. This test requires a blood sample and is generally more sensitive than a urine test, meaning it can detect pregnancy earlier.
How long before I get the results? The test usually takes 5 minutes to complete, and the results are ready quickly.

What does the test result mean?

Positive result

A positive result indicates the presence of hCG in the urine. This usually means that the person is pregnant. A false positive can occur in some situations, such as if you're taking certain fertility drugs or you've recently had an abortion.

Negative result

A negative result indicates an absence of hCG in the urine or an amount too small for the test to detect. This usually means that the person is not pregnant. However, if you think you're pregnant but your test comes back negative, you can redo the test after a few days.

Several situations can lead to a false negative, the following being the most common:

  • The test is expired
  • The urine is too diluted
  • The test was performed too early in the pregnancy
  • Errors were made when handling the test

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The patient information leaflets are provided by Vigilance Santé Inc. This content is for information purposes only and does not in any manner whatsoever replace the opinion or advice of your health care professional. Always consult a health care professional before making a decision about your medication or treatment.

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