LOINCActiveBoth

LOINC Code 100654-3: Pyruvate kinase M2 Ql (Stl)

100654-3 is a LOINC code used to identify Pyruvate kinase M2 Ql (Stl) 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 Pyruvate kinase M2. It is commonly used with the system or sample type Stool.

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 Pyruvate kinase M2. It is commonly used with the system or sample type Stool.

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

What it does not mean

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

Key facts

  • Pyruvate kinase M2 [Presence] in Stool
  • Pyruvate kinase M2
  • Bowel movement; Chemistry; Faecal; Faeces; Fecal; Feces; M2-PK; Ordinal; PK; PKM2; Point in time; PR; Pyruvic acid; QL; Qual; Qualitative; Random; Screen; Stl; Stool = Fecal

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

Pyruvate kinase M2 Ql (Stl)Pyruvate kinase M2 [Presence] in StoolM2-PK Stl QlPyruvate kinase M2CHEMPyruvate kinase M2, StoolPrThr

Frequently asked questions

Code details

Code100654-3
SystemLOINC
Display namePyruvate kinase M2 Ql (Stl)
DescriptionPyruvate kinase M2
Short nameM2-PK Stl Ql
ComponentPyruvate kinase M2
PropertyPrThr
TimingPt
System (specimen)Stool
ScaleOrd
ClassCHEM
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Pyruvate kinase M2, Stool

Part names

Pyruvate kinase M2PrThrPtStoolOrdPresence or ThresholdPoint 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 100654-3 | HealthAssure