First Response advertises early detection as "6 days sooner" than a missed period. In other wording this corresponds to about 5 days before your expected period.
Times vary by format: many tests show results in about 3 minutes, some rapid tests report results in about 1 minute, and some cup or strip formats report about 5 minutes.
Common package sizes include small packs of 2 or 3 tests and value packs up to 8 tests, so offerings typically range from 2 to 8 tests per pack.
Two lines indicate pregnant and one line indicates not pregnant. A faint second line still counts as a pregnant result ("even if either line is faint").
Both. Some First Response tests give a digital "YES+ / NO-" readout, while others use color indicator lines (two lines = pregnant, one line = not pregnant).
Most stick and strip tests require no battery. Some digital/electronic tests use lithium batteries (examples show 1 or 2 batteries).
Reported figures vary by description. One set lists: 60% at 5 days before, 86% at 4 days, 96% at 3 days, and >99% at 2 days, 1 day, and on the expected day. Another description reports 76% at 5 days before the expected period.
