According to reviews, First Response Early Result is the most reliable pregnancy test, delivering the earliest possible results. First Response consistently detected 12.5 mIU of hCG (an early pregnancy hormone) in product… testing, making it the most likely pregnancy test on the market to detect pregnancy on the first day of a missed period (95% of the time in product testing). Plus, reviews say that First Response even detected hCG levels as low as 6.3 and 6.5 mIU, soon after implantation -- even before a missed period. First Response is available in one-, two- and three-strip kits. Experts say that two-strip kits are best, since most women will want to test twice, waiting a week before the second test.
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