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A 46-year-old member asked:

What do very high levels of cd3+ and cd8+ in blood mean (in the 2300 range)?

1 doctor answer2 doctors weighed in
Dr. Robert Silge
Allergy and Immunology 16 years experience
It depends: Cd markers tell us what subsets of lymphocytes we have in our blood. Cd3 is found on the surface of all t cells. T cells are involved in directing other immune cells and in killing other cells. Cd8 cells are a subset of cd3 cells, and are commonly called cytotoxic t cells. They can go up in a viral infection, leukemia, etc. You need to know your other subsets, and if any other markers are abnormal.

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Last updated Jun 12, 2015

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