It depends: Each test is different. Most tests show two bars as positive. The package will tell you the best time to take a test. Typically mid void first thing in the morning. The closer to the time of expected next period is best.
Answered 9/14/2012
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Too early to test: Conception occurs within day or so of the sex. It takes about 3 weeks for the embryo to make enough HCG for a positive pregnancy test. Blood test may be done a day after a missed period. Home pregnancy tests should be done 4-5 days after the missed period. If the result is negative repeat the test in 4-5 days. Use first morning urine and follow instructions for the test carefully.
Answered 5/3/2019
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