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: Results may also be more accurat e if you do the test first thing in the morning, when your urine is more concentrated. Urine home pregnancy tests are about 99% accurate. Blood tests are even more accurate than this. How accurate a home pregnancy test is depends upon: The sensitivity of the pregnancy test. 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.