First response pregnancy test

Testing is the first pregnancy of the response at home designed to detect HCG begins a hormone secreted by the placenta shortly after implantation of the embryo in the lining of the uterus: a hormone in the urine of a pregnant woman is freedom. HCG is human chorionic gonadotropin. Pregnancy tests are designed to detect. Detecting is hCG in the blood, such as pregnancy tests work.

How accurate is first response pregnancy test? Achieve the sensitivity of detection of the highest possible for an hCG - based pregnancy test on the first day of a menstrual period is 90 percent, because 10 percent of women still can not implant in the uterus. The authors estimate that the sensitivity of detection of the highest possible for a pregnancy test a week after the first day of your menstrual period by 97 percent, so its accuracy is not usually questioned as test followed the instructions correctly on your pregnancy stages.

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