How Do Blood Tests Administered By A Doctors Office Differ From Home Pregnancy Tests?
Pregnancy tests performed by a health care provider using blood samples can detect a pregnancy one to two days after implantation — a few days before a missed period. Blood tests can pick up very low levels of hCG and will, therefore, show results almost immediately. All pregnancy tests are fundamentally the same — they measure the amount of hCG in your system and produce positive or negative results based on that measurement.