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T-Cell Activation Profile, CD8 Subsets
Percentage and absolute values CD3+, CD3+CD4+, CD3+CD8+, CD3+CD25+, CD8+CD38+, CD8+HLA-DR+, CD4:CD8 ratio; CBC with differential
Expanded profile for AIDS monitoring and prognosis. An increase in activation markers is associated with poor prognosis.
This test was developed, and its performance characteristics determined, by LabCorp. It has not been cleared or approved by the US Food and Drug Administration (FDA).
Reference intervals are established by the laboratory. See table.
95% Confidence Interval
Fill tube(s) to capacity.
Invert tube 8 to 10 times immediately after collection. To preserve cellular viability, collect specimen so it will arrive in the laboratory within 48 hours of collection. Indicate date and time of venipuncture on the tube(s) and on the test request form.
Maintain specimen at room temperature.
Causes for Rejection
Hemolysis; specimen refrigerated or frozen; clotted specimen; contaminated specimen