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LabCorp and Quest are both open and taking extra precautions to service Walk-In Lab customers. 

In the near future Walk-In Lab will be providing Quest COVID-19 Antibody testing.  Learn more.

CD4:CD8 Ratio Blood Test Profile

Percentage CD4+; absolute CD4+; percentage CD8+; absolute CD8+; CD4:CD8 ratio; CBC with differential.

Sample Report

Test Code: 505271

Also Known As:

Methodology: Flow cytometry

Preparation: No special preparation required.

Test Results: 3-6 days. May take longer based on weather, holiday or lab delays.


HIV-1 infection results in a decrease of CD4 T cells, an increase of CD8 T cells, a decrease in the CD4:CD8 ratio, and a progressive destruction of immune function. In HIV-1 seropositive patients, enumeration of CD4 T cells may be used for prognostic purposes and to monitor disease progression and antiretroviral therapy.

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