LOINCActiveObservation

LOINC Code 46272-1: Appearance post transfusion reaction (U)

46272-1 is a LOINC code used to identify Appearance post transfusion reaction (U) 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 Observation^post transfusion reaction. 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 Observation^post transfusion reaction. 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

What it does not mean

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

Key facts

  • Appearance of Urine --after transfusion reaction
  • Observation^post transfusion reaction
  • After; Appearance; Nominal; p transf; p transf rx; Point in time; PST; Random; React; Rxn; SPEC; Transf React; Tx; 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

Appearance post transfusion reaction (U)Appearance of Urine --after transfusion reactionAppearance p transf rx UrObservation^post transfusion reactionSPECAppearance after Transfusion Reaction, UrineAper

Frequently asked questions

Code details

Code46272-1
SystemLOINC
Display nameAppearance post transfusion reaction (U)
DescriptionObservation^post transfusion reaction
Short nameAppearance p transf rx Ur
ComponentObservation^post transfusion reaction
PropertyAper
TimingPt
System (specimen)Urine
ScaleNom
ClassSPEC
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.19
Last changed2.79

Consumer names

Appearance after Transfusion Reaction, Urine

Part names

Observation^post transfusion reactionAperPtUrineNomAppearancePoint 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 46272-1 | HealthAssure