Test Catalog

Take Our Survey

Test ID: NKCP    
Natural Killer (NK) Cytotoxicity Profile

Fees Several factors determine the fee charged to perform a test. Contact your U.S. or International Regional Manager for information about establishing a fee schedule or to learn more about resources to optimize test selection.

  • Authorized users can sign in to the Client Price Portal for detailed fee information.
  • Clients without portal access can contact Customer Service 24 hours a day, seven days a week.
  • Prospective clients should contact their Regional Manager. For assistance, contact Customer Service.

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.

86355-B cells, total count

86357-Natural killer (NK) cells, total count

86359-T cells, total count

86360-Absolute CD4/CD8 count with ratio

86805-Lymphocytotoxicity assay, visual crossmatch; with titration

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

Test IDTest Order NameOrder LOINC Code
NKCPNatural Killer (NK) Cytotoxicity ProfileIn Process


Result IDTest Result NameResult LOINC Code
15253% Cyto. E:T 100No LOINC Needed
9336T-and B-Cell QN by Flow Cytometry(TBBS_)In Process
15265Lytic UnitsNo LOINC Needed
15255% Cyto. E:T 50No LOINC Needed
3321CD45 Lymph Count, Flow27071-0
3316% CD3 (T Cells)8124-0
15257% Cyto. E:T 25No LOINC Needed
15259% Cyto. E:T 12.5No LOINC Needed
3318% CD19 (B Cells)8117-4
15261% Cyto. E:T 6.25No LOINC Needed
4054% CD16+CD56 (NK cells)18267-5
3319% CD4 (Helper Cells)8123-2
15263% Cyto. E:T 3.13No LOINC Needed
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.