LOINCActive

LOINC Code 61138-4: Principal result interpreter Study

61138-4 is a LOINC code used to identify Principal result interpreter Study 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 Principal result interpreter. It is commonly used with the system or sample type Study.

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 Principal result interpreter. It is commonly used with the system or sample type Study.

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

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Principal result interpreter Study
  • Principal result interpreter
  • Nominal; Person name; Point in time; Principal interpreter; Random; Test of Infant Motor Performance; TIMP

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

Principal result interpreter StudyPrincipal result interpreterTIMPPnPtStudyNom

Frequently asked questions

Code details

Code61138-4
SystemLOINC
Display namePrincipal result interpreter Study
DescriptionPrincipal result interpreter
ComponentPrincipal result interpreter
PropertyPn
TimingPt
System (specimen)Study
ScaleNom
ClassTIMP
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.34
Last changed2.70

Part names

Principal result interpreterPnPtStudyNomPerson namePoint in time (spot)

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 61138-4 | HealthAssure