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How Long Does a Positive Result Last on a Home Pregnancy Test? Not all home pregnancy tests have the same level of sensitivity to hCG (human chorionic gonadotropin), the pregnancy hormone, so some will show a positive result early in a womanâs pregnancy, and some wonât register positive until up to a week after a missed period.
I got a positive on my home pregnancy test 9 days after ovulation. I went to get a blood test and it was negative. I have since gotten 5 days of consecutive positive results on 3 different brands of home pregnancy tests.Depending on what test the doctor uses will depend on the sensitivity. Answer     A blood test for pregnancy (hcg, or human chorionic gonadotropin) will be accurate at implantation, which occurs about 8-12 days after conception. â¦ HCG is detectable as early as 8 days post-conception.