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 50445-6: Corticotropin spec 1 (P) [Mass/Vol]

Name: LOINC Code 50445-6: Corticotropin spec 1 (P) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:34.496Z

50445-6 is a LOINC code used to identify Corticotropin spec 1 (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^1st specimen. 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^1st specimen. 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 --1st specimen
Corticotropin^1st specimen
ACTH; Acute specimen; Adrenocorticotrophic hormone; Adrenocorticotropin; c206; c74; CHEMISTRY.CHALLENGE TESTING; Cortrosyn; First; Level; Mass concentration; Pl; Plasma; Plsm; Point in time; Pre immunization; QNT; Quan; Quant; Quantitative; Random; Rc206; sp1; Spec; 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 spec 1 (P) [Mass/Vol]Corticotropin [Mass/volume] in Plasma --1st specimenACTH sp1 Plas-mCncCorticotropin^1st specimenCHALCorticotropin specimen 1, BloodMCnc

Frequently asked questions

Code details

Code50445-6

SystemLOINC

Display nameCorticotropin spec 1 (P) [Mass/Vol]

DescriptionCorticotropin^1st specimen

Short nameACTH sp1 Plas-mCnc

ComponentCorticotropin^1st specimen

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 changed2.73

Consumer names

Corticotropin specimen 1, Blood

Part names

Corticotropin^1st specimenMCncPtPlasQnMass 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.