What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 82224-7: Ribose-5-phosphate isomerase (Lymphoblasts) [Catalytic activity/Mass]

Name: LOINC Code 82224-7: Ribose-5-phosphate isomerase (Lymphoblasts) [Catalytic activity/Mass]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:08.164Z

82224-7 is a LOINC code used to identify Ribose-5-phosphate isomerase (Lymphoblasts) [Catalytic activity/Mass] 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 Ribose-5-phosphate isomerase. It is commonly used with the system or sample type Lymphoblasts.

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 Ribose-5-phosphate isomerase. It is commonly used with the system or sample type Lymphoblasts.

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

Ribose-5-phosphate isomerase [Enzymatic activity/mass] in Lymphoblasts
Ribose-5-phosphate isomerase
Catalytic Content; Chemistry; D-ribose; Esoteric; i Phos; Inorganic phosphate; Isom; Lymphblst; Phos; Phosphate total; Phosphoriboisomerase; Phosphorous; Phosphorus; Phosphrous; Pi; PO4; Point in time; QNT; Quan; Quant; Quantitative; Random; RPI

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

Ribose-5-phosphate isomerase (Lymphoblasts) [Catalytic activity/Mass]Ribose-5-phosphate isomerase [Enzymatic activity/mass] in LymphoblastsRPI Lymphblst-cCntRibose-5-phosphate isomeraseCHEMRibose-5-phosphate isomerase, LymphoblastsCCnt

Frequently asked questions

Code details

Code82224-7

SystemLOINC

Display nameRibose-5-phosphate isomerase (Lymphoblasts) [Catalytic activity/Mass]

DescriptionRibose-5-phosphate isomerase

Short nameRPI Lymphblst-cCnt

ComponentRibose-5-phosphate isomerase

PropertyCCnt

TimingPt

System (specimen)Lymphoblasts

ScaleQn

ClassCHEM

Example unitsnmol/min/mg protein

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.58

Last changed2.58

Consumer names

Ribose-5-phosphate isomerase, Lymphoblasts

Part names

Ribose-5-phosphate isomeraseCCntPtLymphoblastsQnCatalytic ContentPoint 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.