A pregnancy test detects the hormone human chorionic gonadotropin (hCG) to determine whether someone is pregnant—either via a home urine test or blood test performed by a healthcare provider
Home Urine Pregnancy Tests
Designed to detect hCG in urine typically around 12–15 days post-ovulation (around the time of a missed period for a 28‑day cycle)
Most tests offer ~99% accuracy if used correctly after a missed period, though false negatives can occur if testing is too early-For best accuracy:
Use first morning urine when hCG concentration is highest parents.com+15U.S. Food and Drug Administration+15Glamour+15.
Wait at least 1–2 weeks after a missed period (or about 21 days after unprotected sex) before testing
If the first result is negative but pregnancy is still suspected, repeat the test after a few days
A pregnancy test detects a hormone called hCG (human chorionic gonadotropin) in urine or blood—it's produced after an egg attaches to the uterus. Most home urine tests become accurate about a week after a missed period and correctly detect pregnancy 97–99% of the time when instructions are followed. A blood test can detect pregnancy earlier and measure exact hCG levels, often used for early diagnosis or when results are unclear. If a home test is positive, it’s best to follow up with your doctor to confirm. https://medlineplus.gov/lab-tests/pregnancy-test/
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02 August 2025