LOINCActiveObservation

LOINC Code 93353-1: CD64 Ag FC (Neutrophil) [Entitic number]

93353-1 is a LOINC code used to identify CD64 Ag FC (Neutrophil) [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 CD64 Ag. It is commonly used with the system or sample type Neutrophil.

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 CD64 Ag. It is commonly used with the system or sample type Neutrophil.

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: Observation
  • Method: Flow cytometry

What it does not mean

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

Key facts

  • CD64 Ag [Entitic number] on Neutrophil by Flow cytometry (FC)
  • CD64 Ag
  • This term is intended to report the number of CD64 molecules per neutrophil.
  • Antigen; Antigens; CELL MARKERS; Dynamic; Entitic; Entitic number; FC; Fc gamma receptor I; Fc gamma RI; FC gammaRI; FCR I; 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

CD64 Ag FC (Neutrophil) [Entitic number]CD64 Ag [Entitic number] on Neutrophil by Flow cytometry (FC)CD64 Ag EntNum Neut FCCD64 AgCELLMARKCD64 antigen, NeutrophilEntNum

Frequently asked questions

Code details

Code93353-1
SystemLOINC
Display nameCD64 Ag FC (Neutrophil) [Entitic number]
DescriptionCD64 Ag
Short nameCD64 Ag EntNum Neut FC
ComponentCD64 Ag
PropertyEntNum
TimingPt
System (specimen)Neutrophil
ScaleQn
MethodFlow cytometry
ClassCELLMARK
Example units#/cell
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

CD64 antigen, Neutrophil

Part names

CD64 AgEntNumPtNeutrophilQnFlow 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.