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 58522-4: C peptide pre dose glucose [Mass/Vol]

Name: LOINC Code 58522-4: C peptide pre dose glucose [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:39.275Z

58522-4 is a LOINC code used to identify C peptide pre 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^pre dose glucose. 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 C peptide^pre 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 --pre dose glucose
C peptide^pre dose glucose
Before; CHEMISTRY.CHALLENGE TESTING; Connecting peptide of insulin; Glu; Glu tol; Gluc; Glucose tolerance; Glucoseur; GTT; Level; Mass concentration; Pept; Pl; Plasma; Plsm; Point in time; pre Glc; Pro-insulin c peptide; 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.

Common synonyms

C peptide pre dose glucose [Mass/Vol]C peptide [Mass/volume] in Serum or Plasma --pre dose glucoseC peptide pre Glc SerPl-mCncC peptide^pre dose glucoseCHALC peptide before dose glucose, BloodMCnc

Frequently asked questions

Code details

Code58522-4

SystemLOINC

Display nameC peptide pre dose glucose [Mass/Vol]

DescriptionC peptide^pre dose glucose

Short nameC peptide pre Glc SerPl-mCnc

ComponentC peptide^pre 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 changed2.70

Consumer names

C peptide before dose glucose, Blood

Part names

C peptide^pre 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.