I've done a pregnancy test today and it is positive. how long after the test can i go for blood test ?

Time since the: first day of your last menstrual period, is part of the equation, on when to be seen by the doctor you select. Blood test will be positive, anytime the urine test is positive. Call the doctor you wish to see for care, and let them guide you .

Agree with Dr. B: If you had sex since your last period , missed your period, did the home test correctly, you are pregnant and the blood test will be positive now. Wish you good health and a healthy baby!