How acurate is a home pregnancy test?

Timing Dependent: It all matters upon when you take the test. If you test too early it will be negative and invalid if you are really positive but it is too soon for the body to know it. Home pregnancy tests are very accurate if you test after a missed period and not before. Validity is about timing and not about the test.

Very Accurate: Truth is, many of the over-the-counter pregnancy tests are as good (sensitive and specific) as our urine pregnancy tests in the ER and hospital. No need to get another one at the doctor's office for an uncomplicated pregnancy check.