1First Response® can detect the pregnancy hormone as early as five days sooner than the day of your expected period.
*First Response® Digital can detect the pregnancy hormone four days before the expected period.
**99% accurate at detecting typical hormone levels from the day of your expected period. However, some pregnant women may not have detectable amounts of pregnancy hormone in their urine on the first day of the missed period or may have miscalculated the first day of their period.