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LOINC Code 56981-4: Somatotropin 30 Min post resting [Mass/Vol]

56981-4 is a LOINC code used to identify Somatotropin 30 Min post resting [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^30M post resting. It is commonly used with the system or sample type Ser/Plas.

Reviewed by HealthAssure Clinical TeamUpdated 25 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^30M post resting. 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 --30 minutes post resting
  • Somatotropin^30M post resting
  • 30M p resting; After; Chemistry; Endocrine; Endocrinology; GH; Growth hormone; HGH; Human growth hormone; Level; Mass concentration; 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 30 Min post resting [Mass/Vol]Somatotropin [Mass/volume] in Serum or Plasma --30 minutes post restingGH 30M p resting SerPl-mCncSomatotropin^30M post restingCHEMSomatotropin 30 min after Resting, BloodMCnc

Frequently asked questions

Code details

Code56981-4
SystemLOINC
Display nameSomatotropin 30 Min post resting [Mass/Vol]
DescriptionSomatotropin^30M post resting
Short nameGH 30M p resting SerPl-mCnc
ComponentSomatotropin^30M post resting
PropertyMCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHEM
Example unitsug/L;ng/mL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.29
Last changed2.40

Consumer names

Somatotropin 30 min after Resting, Blood

Part names

Somatotropin^30M post restingMCncPtSer/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 56981-4 | HealthAssure