Blood Drug Testing

how accurate is a blood test when determining pregnancy?

i've heard many stories about women taking pregnancy test and getting negatives after negatives, even some stories of women getting blood test and STILL showing up negative but end up being pregnant..i suspect i might be 4 weeks pregnant because my period is 5 days late but i don't want to think too hard into it because it could be stress or a change in my cycle...have any of you gotten negative pregnancy test/blood test and found out you really were preg????

Public Comments

1. The best test is a blood test. Ive heard also of blood tests coming back negative but its pretty uncommon. The best thing would be to go get checked if you are pregnant they will do a urine tests then a blood test. Usually the urine test will be accurate.
2. it's very uncommon for a blood test to come back negative if you're indeed pregnant