When to Take a Pregnancy Test for Accurate Results

For the most reliable result, take a home pregnancy test on the first day of your missed period. Testing earlier can yield false negatives because human chorionic gonadotropin (hCG) levels may be too low to detect.

Key Timing Guidelines

• Missed period: Optimal time; hCG is typically detectable in urine.
• Early testing (before missed period): Some sensitive tests claim detection 4–5 days before expected period, but accuracy is lower (~60–75%). A negative result should be repeated after missed period.
• Testing during menstruation: Not recommended; bleeding can dilute urine, and hCG is not produced if menstruation occurs (indicating no implantation).

Tips for Accuracy

• Use first-morning urine (highest hCG concentration).
• Follow instructions precisely; check expiration date.
• Avoid excessive fluid intake before testing.

If Results Are Unclear

• Repeat test in 48 hours (hCG doubles every 48–72 hours in early pregnancy).
• Consult a provider for a quantitative blood hCG test, which is more sensitive and can detect pregnancy earlier.

Note: A period-like bleed can sometimes be implantation bleeding (lighter, shorter). If unsure, test or see a clinician.