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 55514-4: Somatotropin 20 Min post exercise [Mass/Vol]

Name: LOINC Code 55514-4: Somatotropin 20 Min post exercise [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:37.765Z

55514-4 is a LOINC code used to identify Somatotropin 20 Min post exercise [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 Somatotropin^20M post exercise. 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 Somatotropin^20M post exercise. 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

Somatotropin [Mass/volume] in Serum or Plasma --20 minutes post exercise
Somatotropin^20M post exercise
20M p Exc; After; CHEMISTRY.CHALLENGE TESTING; Endocrine; Endocrinology; EXCZ; GH; Growth hormone; HGH; Human growth hormone; Level; Mass concentration; p Exc; Pl; Plasma; Plsm; Point in time; PST; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; Somatotropic hormone; SR; STH

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

Somatotropin 20 Min post exercise [Mass/Vol]Somatotropin [Mass/volume] in Serum or Plasma --20 minutes post exerciseGH 20M p Exc SerPl-mCncSomatotropin^20M post exerciseCHALSomatotropin 20 min after exercise, BloodMCnc

Frequently asked questions

Code details

Code55514-4

SystemLOINC

Display nameSomatotropin 20 Min post exercise [Mass/Vol]

DescriptionSomatotropin^20M post exercise

Short nameGH 20M p Exc SerPl-mCnc

ComponentSomatotropin^20M post exercise

PropertyMCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassCHAL

Example unitsug/L;ng/mL

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.27

Last changed2.40

Consumer names

Somatotropin 20 min after exercise, Blood

Part names

Somatotropin^20M post exerciseMCncPtSer/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.