What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 100741-8: Gamma glutamyl transferase.macromolecular Ql

Name: LOINC Code 100741-8: Gamma glutamyl transferase.macromolecular Ql
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:16.533Z

100741-8 is a LOINC code used to identify Gamma glutamyl transferase.macromolecular Ql 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 Gamma glutamyl transferase.macromolecular. It is commonly used with the system or sample type Ser/Plas.

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 Gamma glutamyl transferase.macromolecular. It is commonly used with the system or sample type Ser/Plas.

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

Gamma glutamyl transferase.macromolecular [Presence] in Serum or Plasma
Gamma glutamyl transferase.macromolecular
Chemistry; Gamma glutamyl transpeptidase; Gamma-GTP; GGT; GGT Macro; GGTP; GT; Ordinal; Pl; Plasma; Plsm; Point in time; PR; QL; Qual; Qualitative; Random; Screen; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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

Gamma glutamyl transferase.macromolecular QlGamma glutamyl transferase.macromolecular [Presence] in Serum or PlasmaGGT Macro SerPl QlGamma glutamyl transferase.macromolecularCHEMGamma glutamyl transferase.macromolecular, BloodPrThr

Frequently asked questions

Code details

Code100741-8

SystemLOINC

Display nameGamma glutamyl transferase.macromolecular Ql

DescriptionGamma glutamyl transferase.macromolecular

Short nameGGT Macro SerPl Ql

ComponentGamma glutamyl transferase.macromolecular

PropertyPrThr

TimingPt

System (specimen)Ser/Plas

ScaleOrd

ClassCHEM

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.73

Last changed2.73

Consumer names

Gamma glutamyl transferase.macromolecular, Blood

Part names

Gamma glutamyl transferase.macromolecularPrThrPtSer/PlasOrdPresence or ThresholdPoint in time (spot)Serum or Plasma

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.