LOINCActiveBoth

LOINC Code 108142-1: C peptide spec 4 [Mass/Vol]

108142-1 is a LOINC code used to identify C peptide spec 4 [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^4th specimen. 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^4th specimen. 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: Both

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 --4th specimen
  • C peptide^4th specimen
  • Chemistry; Connecting peptide of insulin; Level; Mass concentration; Pept; Pl; Plasma; Plsm; Point in time; Pro-insulin c peptide; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; sp4; 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

C peptide spec 4 [Mass/Vol]C peptide [Mass/volume] in Serum or Plasma --4th specimenC peptide sp4 SerPl-mCncC peptide^4th specimenCHEMC peptide specimen 4, BloodMCnc

Frequently asked questions

Code details

Code108142-1
SystemLOINC
Display nameC peptide spec 4 [Mass/Vol]
DescriptionC peptide^4th specimen
Short nameC peptide sp4 SerPl-mCnc
ComponentC peptide^4th specimen
PropertyMCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHEM
Example unitsmg/dL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.81
Last changed2.81

Consumer names

C peptide specimen 4, Blood

Part names

C peptide^4th specimenMCncPtSer/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.

LOINC Code 108142-1 | HealthAssure