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Test ID: TCP    
T-Cell Subsets, Naive, Memory and Activated

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Test Classification Provides information regarding the medical device classification for laboratory test kits and reagents. Tests may be classified as cleared or approved by the US Food and Drug Administration (FDA) and used per manufacturer's instructions, or as products that do not undergo full FDA review and approval, and are then labeled as an Analyte Specific Reagent (ASR), Investigation Use Only (IUO) product, or a Research Use Only (RUO) product.

This test was developed using an analyte specific reagent. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information Provides guidance in determining the appropriate Current Procedural Terminology (CPT) code(s) information for each test or profile. The listed CPT codes reflect Mayo Medical Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.

86359-T cells, total count

86361-Absolute CD4 count

88184-Flow cytometry

LOINC® Code Information Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the result codes returned for this test or profile.

Result IDReporting NameLOINC Code
29151%CD4+CD45RA+ naive T cells13336-3
29152%CD4+CD62L+CD27+ naive T cellsIn Process
29153%CD8+CD45RA+ naive T cellsIn Process
29154%CD8+CD62L+CD27+naive T cellsIn Process
29155%CD4+CD45RO+ memory T cells41994-5
29156%CD4+CD62L+CD27+CD45RO+ (Tcm)In Process
29157%CD4+CD62L-CD27-CD45RO+ (Tem)In Process
29158%CD8+CD45RO+ memory T cellsIn Process
29159%CD8+CD62L+CD27+CD45RO+ (Tcm)In Process
29160%CD8+CD62L-CD27-CD45RO+ (Tem)In Process
29161%Activated CD4 T cells (4+CD25+)13332-2
29162%CD4+HLA DR+CD28+ T cellsIn Process
29163%CD8+HLA DR+CD28+ T cellsIn Process
29164CD4+CD45RA+ naive T cells26759-1
29165CD4+CD62L+CD27+ naive T cellsIn Process
29166CD8+CD45RA+ naive T cellsIn Process
29167CD8+CD62L+CD27+naive T cellsIn Process
29168CD4+CD45RO+ memory T cells34475-4
29169CD4+CD62L+CD27+CD45RO+ (Tcm)In Process
29170CD4+CD62L-CD27-CD45RO+ (Tem)In Process
29171CD8+CD45RO+ memory T cellsIn Process
29172CD8+CD62L+CD27+CD45RO+ (Tcm)In Process
29173CD8+CD62L-CD27- CD45RO+ (Tem)In Process
29174Activated CD4 T cells (4+CD25+)26982-9
29175CD4+HLA DR+CD28+ T cellsIn Process
29176CD8+HLA DR+CD28+ T cellsIn Process
29178Interpretation69052-9