U.S. doctors online nowAsk doctors free
A 37-year-old female asked:

Hello. i had blood work up done. one of the test were for covid antibodies. sars cov 2 igg and sars cov 2 igm. i tested positive for the sars cov 2 igm test . negative on the igg. does that mean i was covid positive when i had the blood work ?

1 doctor answer1 doctor weighed in
Dr. John Berryman
Obstetrics and Gynecology 56 years experience
Igg tests will show an early response to a given antigen (like "sars cov 2", and Igm testing shows a later production of antibodies. It is likely that at the time of testing you were already "positive", as a negative Igg test with a positive Igm test implies a "covid positive" prior to the testing done.
Created for people with ongoing healthcare needs but benefits everyone.

Related questions

Last updated Jul 1, 2022
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits - just $39!
50% off with $15/month membership


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.