10 doctors weighed in:

Can a complete blood count tell you if you have mono?

10 doctors weighed in
Dr. Megan Bird
Obstetrics & Gynecology
7 doctors agree

In brief: No, but

A blood count can tell if you have an abnormal counts of the cells of the blood (white cells, red cells and platelets).
One or all can be lower with mono. However, even if you have an abnormal blood count and the right symptoms, you should have the monospot test done to confirm.

In brief: No, but

A blood count can tell if you have an abnormal counts of the cells of the blood (white cells, red cells and platelets).
One or all can be lower with mono. However, even if you have an abnormal blood count and the right symptoms, you should have the monospot test done to confirm.
Dr. Megan Bird
Dr. Megan Bird
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Dr. Margot Watson
Gynecology
1 doctor agrees

In brief: No

A complete blood count only measures the number and type of white blood cells and red blood cells.
There are very specific blood tests for mononucleosis.

In brief: No

A complete blood count only measures the number and type of white blood cells and red blood cells.
There are very specific blood tests for mononucleosis.
Dr. Margot Watson
Dr. Margot Watson
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Dr. Arthur Heller
Internal Medicine - Gastroenterology

In brief: Kinda

CBC shows number and type of white blood cells.
Mono has "atypical" lymphocytes (type of wbc). Can be confirmatory in appropriate setting, i.e. Fatigue, sore throat, enlarged lymph nodes, (especially behind the neck), achy, feverish, with or without weight loss, poor appetite, jaundice; can (should) be confirmed with more specific tests for epstein barr virus and/or cytomegalovirus (causes).

In brief: Kinda

CBC shows number and type of white blood cells.
Mono has "atypical" lymphocytes (type of wbc). Can be confirmatory in appropriate setting, i.e. Fatigue, sore throat, enlarged lymph nodes, (especially behind the neck), achy, feverish, with or without weight loss, poor appetite, jaundice; can (should) be confirmed with more specific tests for epstein barr virus and/or cytomegalovirus (causes).
Dr. Arthur Heller
Dr. Arthur Heller
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