Could you be pregnancy if the home test had a very faint positive line but blood came back negative?

A urine pregnancy test detects the presence of the human chorionic gonadotropin (hCG) hormone, which is produced by the placenta during pregnancy. A blood pregnancy test also detects hCG, but it is more sensitive than a urine test, so it can detect hCG at a lower concentration.

If you received a positive urine pregnancy test and subsequent negative blood test, it is possible that you may have had a chemical pregnancy, which is the earliest form of pregnancy loss.

If you are experiencing any symptoms of pregnancy, such as fatigue, nausea, or breast tenderness, it is still important to follow up with your doctor to rule out any other potential causes and discuss if there may have been any issue due to a potential timing factor in taking those two types of tests.

Blood and urine pregnancy tests can occasionally produce false-positive or false-negative results, so it is essential to confirm the results with your doctor and obtain any necessary follow-up care.