Lymphocyte Activity Profile

CPT: 86356; 86357; 86359; 86360
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Test Details


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).


Flow cytometry

Specimen Requirements


Whole blood


Fill tube(s) to capacity.


Lavender-top (EDTA) tube and yellow-top (ACD-A) or (ACD-B) tube


Invert tube 8 to 10 times immediately after collection. To preserve cellular viability, draw 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.

Storage Instructions

Maintain specimen at room temperature. Do not freeze or refrigerate.

Causes for Rejection

Specimen refrigerated or frozen; clotted specimen; hemolysis; contamination

Clinical Information


Bakesi JG, Grenier K, Roboz J, et al. CD8 lymphocyte subsets provide prognostic measure of HIV disease progression. Int Conf AIDS. 1990; 6:218. Abstract SB 528.
Grenier K, Bach BA, Campbell D, et al. Discordant expression of T-cell activation markers (HLA-DR, CD38, CD25, CD69) as indicators of cellular immune response to HIV infection. Int Conf AIDS. 1990; 6:141. Abstract SA 237.

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The LOINC® codes are copyright © 1994-2018, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at Additional information regarding LOINC® codes can be found at, including the LOINC Manual, which can be downloaded at