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 39563-2: Glucose 3rd specimen post dose lactose [Mass/Vol]

Name: LOINC Code 39563-2: Glucose 3rd specimen post dose lactose [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:26.653Z

39563-2 is a LOINC code used to identify Glucose 3rd specimen post dose lactose [Mass/Vol] 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^3rd specimen post dose lactose. 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^3rd specimen post dose lactose. 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

Glucose [Mass/volume] in Serum or Plasma --3rd specimen post dose lactose
Glucose^3rd specimen post dose lactose
After; CHEMISTRY.CHALLENGE TESTING; Endocrine; Endocrinology; Glu; Glu tol; Gluc; Glucose tolerance; Glucoseur; GTT; Level; LTT; Mass concentration; p dose; Pl; Plasma; Plsm; Point in time; PST; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; sp3; sp3 p Lac; Spec; 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 3rd specimen post dose lactose [Mass/Vol]Glucose [Mass/volume] in Serum or Plasma --3rd specimen post dose lactoseGlucose sp3 p Lac SerPl-mCncGlucose^3rd specimen post dose lactoseCHALGlucose 3rd specimen after lactose, BloodMCnc

Frequently asked questions

Code details

Code39563-2

SystemLOINC

Display nameGlucose 3rd specimen post dose lactose [Mass/Vol]

DescriptionGlucose^3rd specimen post dose lactose

Short nameGlucose sp3 p Lac SerPl-mCnc

ComponentGlucose^3rd specimen post dose lactose

PropertyMCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassCHAL

Example unitsmg/dL

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.15

Last changed2.73

Consumer names

Glucose 3rd specimen after lactose, Blood

Part names

Glucose^3rd specimen post dose lactoseMCncPtSer/PlasQnMass ConcentrationPoint 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.