LOINCActiveBoth

LOINC Code 51187-3: CD15 Ag Immune stain Ql (Bld)

51187-3 is a LOINC code used to identify CD15 Ag Immune stain Ql (Bld) 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 CD15 Ag. It is commonly used with the system or sample type Bld.

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 CD15 Ag. 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: Immune stain

What it does not mean

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

Key facts

  • CD15 Ag [Presence] in Blood by Immune stain
  • CD15 Ag
  • 3-FAL; 3-FL; Antigen; Antigens; Blood; CELL MARKERS; IHC; Imm; Immunohistochemical stain; Immunostain; ImStn; Imun; Imune; Lacto-n-neo-fucopentaose III; LeuM1; Leu-M1; Lewis X; Lex; LNFP III; M-1; My1; My-1; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; SSEA-1; St; Stains; Stn; WB; Whole blood; X-hapten

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

CD15 Ag Immune stain Ql (Bld)CD15 Ag [Presence] in Blood by Immune stainCD15 Ag Bld Ql ImStnCD15 AgCELLMARKCD15 antigen, BloodPrThr

Frequently asked questions

Code details

Code51187-3
SystemLOINC
Display nameCD15 Ag Immune stain Ql (Bld)
DescriptionCD15 Ag
Short nameCD15 Ag Bld Ql ImStn
ComponentCD15 Ag
PropertyPrThr
TimingPt
System (specimen)Bld
ScaleOrd
MethodImmune stain
ClassCELLMARK
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.22
Last changed2.56

Consumer names

CD15 antigen, Blood

Part names

CD15 AgPrThrPtBldOrdImmune stainPresence or ThresholdPoint 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 51187-3 | HealthAssure