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 58686-7: C peptide 2 Hr post dose glucose [Mass/Vol]

Name: LOINC Code 58686-7: C peptide 2 Hr post dose glucose [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

58686-7 is a LOINC code used to identify C peptide 2 Hr post dose glucose [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 C peptide^2H post dose glucose. It is commonly used with the system or sample type Ser/Plas.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 C peptide^2H post dose glucose. 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

C peptide [Mass/volume] in Serum or Plasma --2 hours post dose glucose
C peptide^2H post dose glucose
120 min; 120 minutes; 120min; 2 hours; 2h p Glc; After; CHEMISTRY.CHALLENGE TESTING; Connecting peptide of insulin; Glu; Glu tol; Gluc; Glucose tolerance; Glucoseur; GTT; Level; Mass concentration; p dose; p Glc; Pept; Pl; Plasma; Plsm; Point in time; Pro-insulin c peptide; PST; QNT; Quan; Quant; Quantitative; Random; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for C peptide 2 Hr post dose glucose [Mass/Vol] (58686-7)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

C peptide 2 Hr post dose glucose [Mass/Vol]C peptide [Mass/volume] in Serum or Plasma --2 hours post dose glucoseC peptide 2h p Glc SerPl-mCncC peptide^2H post dose glucoseCHALC peptide 2 hr after glucose, BloodMCnc

Frequently asked questions

Code details

Code58686-7

SystemLOINC

Display nameC peptide 2 Hr post dose glucose [Mass/Vol]

DescriptionC peptide^2H post dose glucose

Short nameC peptide 2h p Glc SerPl-mCnc

ComponentC peptide^2H post dose glucose

PropertyMCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassCHAL

Example unitsug/L

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.32

Last changed2.73

Consumer names

C peptide 2 hr after glucose, Blood

Part names

C peptide^2H post dose glucoseMCncPtSer/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.