It is generally recommended to take a pregnancy test from the first day of a missed period for the most accurate result. Some highly sensitive tests can detect pregnancy hormone (hCG) as early as 6 days before the missed period, but testing too early increases the chance of a false negative. For best accuracy, testing one week after the missed period is suggested. If the menstrual cycle is irregular or the period due date is unknown, waiting at least 21 days after unprotected sex before testing is advised. Testing first thing in the morning is also recommended for higher hormone concentration in urine. Summary:
- Earliest reliable test: 1st day of missed period
- Some tests detect as early as 6 days before missed period
- Best accuracy: 1 week after missed period
- If irregular cycle: test 21 days after unprotected sex
- Morning urine testing preferred
This timing balances the buildup of detectable hCG hormone for accurate pregnancy test results.
