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mononucleosis spot test

a mononucleosis spot test (rapid mono test) is a screening test for mononucleosis. the test detects a type of antibody (heterophil antibody) that forms during certain infections, especially during infection with the epstein-barr virus.

for this test, a sample of blood is placed on a microscope slide and mixed with other substances. if heterophil antibodies are present, the blood clumps. this result usually points to a mono infection.

the test can usually find a mono infection in about 2 to 9 weeks after the person has been exposed to the virus. the antibodies are proteins made by the immune system to fight the infection. after they have formed, antibodies usually remain in a person's blood for life.

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this information does not replace the advice of a doctor. healthwise, incorporated, disclaims any warranty or liability for your use of this information. your use of this information means that you agree to the terms of use and privacy policy. to learn more about healthwise, visit healthwise.org. © 1995-2022 healthwise, incorporated. healthwise, healthwise for every health decision, and the healthwise logo are trademarks of healthwise, incorporated.

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