The Veterans Health Administration (VHA) is the component of the United States Department of Veterans Affairs (VA) led by the Under Secretary of Veterans Affairs for Health that implements the medical assistance program of the VA through the administration and operation of numerous VA Medical Centers (VAMC), Outpatient Clinics (OPC), Community Based ...
Pregnancy tests will catch less than 70% of pregnancies at 4 days before a period. A few things to understand about pregnancy tests. When they say you can test up to 5 days before a missed period, that means 4 days before your period is due. That number is based on an average luteal phase (the time between ovulation and the first day of your period) of 14 days. Which means those tests recommend testing no sooner than 10 days past ovulation.
Though it is possible that a pregnancy test will detect a pregnancy a couple of days before the start of your period, a false negative is more likely in this time period. Take the test after the time when your period should have started and it will be much more accurate. By 1 week + the test should be positive if you're in fact pregnant.