Title: What is the earliest day after a missed period that a person can take a home pregnancy test and expect it to be accurate? - Quora
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Shakti Amarantha
Quora User
Quora User

Content: How closely you follow instructions. How soon after pregnancy you take the test. When you ovulate in your cycle and how soon implantation occurs. At this period it’s already possible to have an ultrasound – its results can determine whether or not there is a pregnancy. William Jurewitz
, M.S., MD from University of California, San Francisco School of Medicine (1977)
Answered 2 years ago · Author has 142 answers and 145.7K answer views
A home pregnancy test, the urine test, will be positive about half of the time on the first day of a missed period. The test should always be positive by one week after a missed period. A blood test can detect lower levels of the pregnancy hormone, HCG, and will be positive much earlier, certainly within a few days of a missed period. With a urine pregnancy test, the more concentrated the sample of urine, the more accurate it will be. That is why it is often recommended to get the first morning urine - it assumes that you haven’t been drinking during the hours that you slept and therefore your
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A home pregnancy test, the urine test, will be positive about half of the time on the first day of a missed period. The test should always be positive by one week after a missed period.