Blood Pregnancy Test: Can It Give a False Positive?

I have an eight month old and I think I'm about eight weeks pregnant again. A home test and a blood test both were positive, but I don't feel pregnant. Can serum pregnancy tests be falsely positive due to hormones from breastfeeding?

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Peg Plumbo CNM

Peg Plumbo has been a certified nurse-midwife (CNM) since 1976. She has assisted at over 1,000 births and currently teaches in the... Read more

It is very unlikely that the serum test could be wrong, as it is a direct measurement of the hCG that a pregnancy produces. Although some tumors produce hCG, breastfeeding does not.

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