LOINCActiveObservation

LOINC Code 51129-5: CD22 blasts Qn (Specimen)

51129-5 is a LOINC code used to identify CD22 blasts Qn (Specimen) 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 Blasts.CD22. It is commonly used with the system or sample type XXX.

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 Blasts.CD22. It is commonly used with the system or sample type XXX.

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

  • CD22 blasts [Units/volume] in Specimen
  • Blasts.CD22
  • Arbitrary concentration; B3; B-3; Blast; BL-CAM; CD22 Blasts; CELL MARKERS; Leu14; Leu-14; Lyb8; Misc; Miscellaneous; Other; Point in time; QNT; Quan; Quant; Quantitative; Random; Spec; To be specified in another part of the message; To-15; Unspecified

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

CD22 blasts Qn (Specimen)CD22 blasts [Units/volume] in SpecimenCD22 Blasts Spec-aCncBlasts.CD22CELLMARKCD22 blasts, SpecimenACnc

Frequently asked questions

Code details

Code51129-5
SystemLOINC
Display nameCD22 blasts Qn (Specimen)
DescriptionBlasts.CD22
Short nameCD22 Blasts Spec-aCnc
ComponentBlasts.CD22
PropertyACnc
TimingPt
System (specimen)XXX
ScaleQn
ClassCELLMARK
Example unitsMean Fluorescent Intensity
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.22
Last changed2.73

Consumer names

CD22 blasts, Specimen

Part names

Blasts.CD22ACncPtXXXQnCD22 blastsArbitrary ConcentrationPoint in time (spot)

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 51129-5 | HealthAssure