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 50428-2: Corticotropin 1 Hr post 100 ug CRH IV (P) [Mass/Vol]

Name: LOINC Code 50428-2: Corticotropin 1 Hr post 100 ug CRH IV (P) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:34.496Z

50428-2 is a LOINC code used to identify Corticotropin 1 Hr post 100 ug CRH IV (P) [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 Corticotropin^1H post 100 ug CRH IV. It is commonly used with the system or sample type 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 Corticotropin^1H post 100 ug CRH IV. It is commonly used with the system or sample type 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

Corticotropin [Mass/volume] in Plasma --1 hour post 100 ug CRH IV
Corticotropin^1H post 100 ug CRH IV
1 hour; 1.0Hr; 1h p 100 ug CRH IV; 60 min; 60 minutes; 60M; 60min; ACTH; Adrenocorticotrophic hormone; Adrenocorticotropin; After; c206; c74; CHEMISTRY.CHALLENGE TESTING; Cortrosyn; Level; Mass concentration; mcg; Pl; Plasma; Plsm; Point in time; PST; QNT; Quan; Quant; Quantitative; Random; Rc206; Tumor marker

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

Corticotropin 1 Hr post 100 ug CRH IV (P) [Mass/Vol]Corticotropin [Mass/volume] in Plasma --1 hour post 100 ug CRH IVACTH 1h p 100 ug CRH IV Plas-mCncCorticotropin^1H post 100 ug CRH IVCHALCorticotropin 1 hr after 100 ug CRH intravenous, BloodMCnc

Frequently asked questions

Code details

Code50428-2

SystemLOINC

Display nameCorticotropin 1 Hr post 100 ug CRH IV (P) [Mass/Vol]

DescriptionCorticotropin^1H post 100 ug CRH IV

Short nameACTH 1h p 100 ug CRH IV Plas-mCnc

ComponentCorticotropin^1H post 100 ug CRH IV

PropertyMCnc

TimingPt

System (specimen)Plas

ScaleQn

ClassCHAL

Example unitspg/mL;ng/L

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.22

Last changed2.40

Consumer names

Corticotropin 1 hr after 100 ug CRH intravenous, Blood

Part names

Corticotropin^1H post 100 ug CRH IVMCncPtPlasQnMass ConcentrationPoint in time (spot)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.