LOINCActiveBoth

LOINC Code 2454-7: Hypoxanthine phosphoribosyltransferase (RBC) [Catalytic activity/Vol]

2454-7 is a LOINC code used to identify Hypoxanthine phosphoribosyltransferase (RBC) [Catalytic activity/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 Hypoxanthine phosphoribosyltransferase. It is commonly used with the system or sample type RBC.

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 Hypoxanthine phosphoribosyltransferase. It is commonly used with the system or sample type RBC.

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: Both

What it does not mean

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

Key facts

  • Hypoxanthine phosphoribosyltransferase [Enzymatic activity/volume] in Red Blood Cells
  • Hypoxanthine phosphoribosyltransferase
  • Catalytic Concentration; Chemistry; Erythrocytes; HGPRT; HPRT; hypoxanthine-guanine phosphoribosyltransferase; Point in time; QNT; Quan; Quant; Quantitative; Random; Red blood cells; Red blood corpusles

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

Hypoxanthine phosphoribosyltransferase (RBC) [Catalytic activity/Vol]Hypoxanthine phosphoribosyltransferase [Enzymatic activity/volume] in Red Blood CellsHPRT RBC-cCncHypoxanthine phosphoribosyltransferaseCHEMHypoxanthine phosphoribosyltransferase, Red blood cellsCCnc

Frequently asked questions

Code details

Code2454-7
SystemLOINC
Display nameHypoxanthine phosphoribosyltransferase (RBC) [Catalytic activity/Vol]
DescriptionHypoxanthine phosphoribosyltransferase
Short nameHPRT RBC-cCnc
ComponentHypoxanthine phosphoribosyltransferase
PropertyCCnc
TimingPt
System (specimen)RBC
ScaleQn
ClassCHEM
Example unitsU/mL RBC
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.44

Consumer names

Hypoxanthine phosphoribosyltransferase, Red blood cells

Part names

Hypoxanthine phosphoribosyltransferaseCCncPtRBCQnCatalytic ConcentrationPoint in time (spot)Red Blood Cells

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.