LOINC Code 73810-4: CD3-CD16+CD56+HLA-DR+ (activated Natural Killer) cells/Cells.CD3-CD16+CD56+ FC (Bld)

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Cells.CD3-CD16+CD56+HLA-DR+/Cells.CD3-CD16+CD56+. It is commonly used with the system or sample type Bld.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Order vs observation: Both
• Method: Flow cytometry

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• CD3-CD16+CD56+HLA-DR+ (activated Natural Killer) cells/Cells.CD3-CD16+CD56+ in Blood by Flow cytometry (FC)
• Cells.CD3-CD16+CD56+HLA-DR+/Cells.CD3-CD16+CD56+
• The % activated natural killer (NK) cells can be determined by comparing the number of activated NK cells (CD3-CD16+CD56+HLA-DR+) out of 100 NK cells (CD3-CD16+CD56+). The submitter's lab uses HLA DR antibodies (HLA DR+) for late activation of NK cells within a subpopulation of NK cells that lack CD3 expression (CD3-) and express CD16 and CD56 (CD16+, CD56+).
• Blood; CD3 Cells; CD3+CD16+ Cells; CD3+CD16+CD56+ Cells; CD3-CD16+ Cells; CD3-CD16+CD56+ Cells; Cell; CELL MARKERS; Cellularity; Dynamic; FC; FCGR3A; Human Leukocyte Antigen; I3; Leu11; Leu-11; Leu11b; Leu-11B; Leu19; Leu-19; Leu4; Leu-4; Natural killer cells; NCAM; Neural cell adhesion molecule; NK; NK activated; NKH1; Number fraction; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; T3; WB; Whole blood

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions