LOINCActiveObservation

LOINC Code 33042-3: Interpretation Immunofixation (24H U) [Interp]

33042-3 is a LOINC code used to identify Interpretation Immunofixation (24H U) [Interp] 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 Interpretation. It is commonly used with the system or sample type Urine.

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 Interpretation. It is commonly used with the system or sample type Urine.

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
  • Method: Immunofixation

What it does not mean

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

Key facts

  • Immunofixation for 24 hour Urine
  • Interpretation
  • 1 day; 24 hours; 24HR; Chemistry; IFE; Ifix; Immunofixation electrophoresis; Impression; Impression/interpretation of study; Impressions; Interp; Interpret; Interpretation; Interpt; Intrp; Nominal; UA; UR; Urn

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

Interpretation Immunofixation (24H U) [Interp]Immunofixation for 24 hour UrineInterpretation 24h Ur IFE-ImpInterpretationCHEMInterpretation of Immunofixation test, UrineImp

Frequently asked questions

Code details

Code33042-3
SystemLOINC
Display nameInterpretation Immunofixation (24H U) [Interp]
DescriptionInterpretation
Short nameInterpretation 24h Ur IFE-Imp
ComponentInterpretation
PropertyImp
Timing24H
System (specimen)Urine
ScaleNom
MethodImmunofixation
ClassCHEM
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.09
Last changed2.73

Consumer names

Interpretation of Immunofixation test, Urine

Part names

InterpretationImp24HUrineNomImmunofixationImpression/interpretation of study24 hours

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 33042-3 | HealthAssure