LOINCActiveObservation

LOINC Code 21015-3: CD33 cells (Bld) [#/Vol]

21015-3 is a LOINC code used to identify CD33 cells (Bld) [#/Vol] 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 Cells.CD33. It is commonly used with the system or sample type Bld.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Cells.CD33. 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: Observation

What it does not mean

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

Key facts

  • CD33 cells [#/volume] in Blood
  • Cells.CD33
  • #; ABS; absolute; absolutes; Blood; CD33 Cells; Cell; CELL MARKERS; Cellularity; Cnt; Count; Count/volume; CT; gp67; LeuM9; Leu-M9; My9; My-9; Number concentration; Number Concentration (count/vol); p67; Point in time; QNT; Quan; Quant; Quantitative; Random; 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

CD33 cells (Bld) [#/Vol]CD33 cells [#/volume] in BloodCD33 Cells # BldCells.CD33CELLMARKCD33 cells, BloodNCnc

Frequently asked questions

Code details

Code21015-3
SystemLOINC
Display nameCD33 cells (Bld) [#/Vol]
DescriptionCells.CD33
Short nameCD33 Cells # Bld
ComponentCells.CD33
PropertyNCnc
TimingPt
System (specimen)Bld
ScaleQn
ClassCELLMARK
Example units/uL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.42

Consumer names

CD33 cells, Blood

Part names

Cells.CD33NCncPtBldQnCD33 cellsNumber ConcentrationPoint in time (spot)Blood

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.

LOINC Code 21015-3 | HealthAssure