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Covid-19 Tests

Healthcare Providers Fact Sheet

Recipients Fact Sheet

NIH Clinical Study 

What is the significance of the various test results?

‚ÄčIgM negative, IgG negative: Patient not exposed or too early. A medical professional should observe symptoms and epidemiology of patients. Retesting should be considered if symptoms appear or persist.

IgM positive, IgG positive/negative: Acute or recent infection.

IgM negative, IgG positive: Previous, distant infection.