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.

LOINCActiveBoth

LOINC Code 10451-3: Proinsulin post 12 Hr fast [Moles/Vol]

Name: LOINC Code 10451-3: Proinsulin post 12 Hr fast [Moles/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:18.505Z

10451-3 is a LOINC code used to identify Proinsulin post 12 Hr fast [Moles/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 Proinsulin^post 12H CFst. 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 Proinsulin^post 12H CFst. 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

Proinsulin [Moles/volume] in Serum or Plasma --12 hours fasting
Proinsulin^post 12H CFst
After; Calorie Fast; CHEMISTRY.CHALLENGE TESTING; Fast; Fasting; Level; p 12h fast; PC; Pl; Plasma; Plsm; Point in time; Pro insulin; PST; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Substance concentration

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

Proinsulin post 12 Hr fast [Moles/Vol]Proinsulin [Moles/volume] in Serum or Plasma --12 hours fastingProinsulin p 12h fast SerPl-sCncProinsulin^post 12H CFstCHALProinsulin after 12 hr Fast, BloodSCnc

Frequently asked questions

Code details

Code10451-3

SystemLOINC

Display nameProinsulin post 12 Hr fast [Moles/Vol]

DescriptionProinsulin^post 12H CFst

Short nameProinsulin p 12h fast SerPl-sCnc

ComponentProinsulin^post 12H CFst

PropertySCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassCHAL

Example unitspmol/L

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0i

Last changed2.73

Consumer names

Proinsulin after 12 hr Fast, Blood

Part names

Proinsulin^post 12H CFstSCncPtSer/PlasQnSubstance 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.