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Test ID: TCAPF    
T- and B-Cell Quantitation and Lymphocyte Proliferation to Antigens Panel

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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.

T- and B-Cell Quantitation by Flow Cytometry

86355-B cells, total count

86357-Natural killer (NK) cells, total count

86359-T cells, total count

86360-Absolute CD4/CD8 count with ratio


Lymphocyte Proliferation to Antigens, Blood


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
9336T-and B-Cell QN by Flow Cytometry(TBBS_)In Process
32326Viab of Lymphs at Day 0In Process
3321CD45 Lymph Count, Flow27071-0
32327Max Prolif of CA as % CD4569014-9
3316% CD3 (T Cells)8124-0
32328Max Prolif of CA as % CD369015-6
3318% CD19 (B Cells)8117-4
32329Max Prolif of TT as % CD4569029-7
4054% CD16+CD56 (NK cells)18267-5
32330Max Prolif of TT as % CD369016-4
3319% CD4 (Helper Cells)8123-2
32331Antigen Comment48767-8
3320% CD8 (Supp'r Cells)8101-8
3322CD3 (T Cells)8122-4
3324CD19 (B Cells)8116-6
4055CD16+CD56 (NK cells)20402-4
3325CD4 (Helper Cells)24467-3
3326CD8 (Supp'r Cells)14135-8
3327H/S Ratio54218-3

LOINC and CPT codes are provided by the performing laboratory.