LOINCActiveBoth

LOINC Code 93351-5: HLA-DR Ag FC (Monocyte) [Entitic number]

93351-5 is a LOINC code used to identify HLA-DR Ag FC (Monocyte) [Entitic number] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component HLA-DR Ag. It is commonly used with the system or sample type Monocyte.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

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 HLA-DR Ag. It is commonly used with the system or sample type Monocyte.

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

  • HLA-DR Ag [Entitic number] on Monocyte by Flow cytometry (FC)
  • HLA-DR Ag
  • This term in intended to report the number of HLA-DR molecules per monocyte.
  • Antigen; Antigens; CELL MARKERS; Dynamic; Entitic; Entitic number; FC; Human Leukocyte Antigen; I3; Point in time; QNT; Quan; Quant; Quantitative; Random

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

HLA-DR Ag FC (Monocyte) [Entitic number]HLA-DR Ag [Entitic number] on Monocyte by Flow cytometry (FC)HLA-DR Ag EntNum Mono FCHLA-DR AgCELLMARKHLA-DR antigen, MonocyteEntNum

Frequently asked questions

Code details

Code93351-5
SystemLOINC
Display nameHLA-DR Ag FC (Monocyte) [Entitic number]
DescriptionHLA-DR Ag
Short nameHLA-DR Ag EntNum Mono FC
ComponentHLA-DR Ag
PropertyEntNum
TimingPt
System (specimen)Monocyte
ScaleQn
MethodFlow cytometry
ClassCELLMARK
Example units#/cell
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.67
Last changed2.67

Consumer names

HLA-DR antigen, Monocyte

Part names

HLA-DR AgEntNumPtMonocyteQnFlow cytometryEntitic numberPoint in time (spot)Flow cytometry (FC)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.