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.

LOINCActiveOrder

LOINC Code 81324-6: Glucose tolerance 2 hours gestational panel

Name: LOINC Code 81324-6: Glucose tolerance 2 hours gestational panel
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:05.775Z

81324-6 is a LOINC code used to identify Glucose tolerance 2 hours gestational panel 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 Glucose tolerance 2H gestational panel. 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 Glucose tolerance 2H gestational panel. 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: Order
Panel type: Panel

What it does not mean

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

Key facts

Glucose tolerance 2 hours gestational panel - Serum or Plasma

Glucose tolerance 2H gestational panel

Glucose blood tests are used to screen pregnant women for gestational diabetes between their 24th and 28th week of pregnancy. The Canadian Diabetes Association recommends that all pregnant women not previously known to have diabetes be screened for gestational diabetes using one of two approachesa one-step 2-hour oral glucose tolerance test (OGTT) with a 75-gram glucose challenge, or a two-step approach with a 50-gram challenge followed by a 75-gram challenge when appropriate. This panel contains terms for the one-step approach. After a fasting glucose level is measured, a woman is given a 75-gram dose of glucose to drink and her glucose levels are measured at 1 hour and 2 hours after the dose. Only one of the values needs to be above a cutoff value for diagnosis of gestational diabetes.

120 min; 120 minutes; 120min; 2 hours; Chemistry; Gest; Gestation; Glu; Glu tol; Gluc; Glucoseur; GTT; GTT gest 2h Pnl; Pan; PANEL.CHEMISTRY; Panl; Pl; Plasma; Plsm; Pnl; Prenatal; 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

Glucose tolerance 2 hours gestational panelGlucose tolerance 2 hours gestational panel - Serum or PlasmaGTT gest 2h Pnl SerPlGlucose tolerance 2H gestational panelPANEL.CHEMGlucose tolerance 2 hours gestational panel, Blood-

Frequently asked questions

Code details

Code81324-6

SystemLOINC

Display nameGlucose tolerance 2 hours gestational panel

DescriptionGlucose tolerance 2H gestational panel

Short nameGTT gest 2h Pnl SerPl

ComponentGlucose tolerance 2H gestational panel

Property-

Timing-

System (specimen)Ser/Plas

Scale-

ClassPANEL.CHEM

StatusACTIVE

Order/ObservationOrder

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.56

Last changed2.56

Consumer names

Glucose tolerance 2 hours gestational panel, Blood

Part names

Glucose tolerance 2H gestational panel-Ser/PlasGlucose tolerance 2 hours gestational panelSerum 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.