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Mononucleosis, photomicrograph of cells Mononucleosis - view of the throat

Overview Risks Results

Mononucleosis spot test

Alternative Names: Monospot test; Heterophile antibody test Normal Values: Normal results are negative, which is indicated by a titer ratio of less than 1:40. What abnormal results mean: Text Continues Below A positive test (titer greater than 1:40) usually indicates infectious mononucleosis. On rare occasions, false-positive tests may be seen with the following: Leukemia or lymphoma Rubella Hepatitis Systemic lupus erythematosus (SLE)

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