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 1813-5: Alpha galactosidase A [Catalytic activity/Vol]

Name: LOINC Code 1813-5: Alpha galactosidase A [Catalytic activity/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

1813-5 is a LOINC code used to identify Alpha galactosidase A [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 Alpha galactosidase A. It is commonly used with the system or sample type Ser/Plas.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Alpha galactosidase A. It is commonly used with the system or sample type Ser/Plas.

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

Alpha galactosidase A [Enzymatic activity/volume] in Serum or Plasma
Alpha galactosidase A
A-Galactosidase A; Alfa; Alpha galactosidase; Alpha-D-galactosidase; Catalytic Concentration; Chemistry; GM1-gangliosidosis; Morquio disease type B; MPS IV B; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Alpha galactosidase A [Catalytic activity/Vol] (1813-5)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Alpha galactosidase A [Catalytic activity/Vol]Alpha galactosidase A [Enzymatic activity/volume] in Serum or PlasmaA-Galactosidase A SerPl-cCncAlpha galactosidase ACHEMAlpha Galactosidase A, BloodCCnc

Frequently asked questions

Code details

Code1813-5

SystemLOINC

Display nameAlpha galactosidase A [Catalytic activity/Vol]

DescriptionAlpha galactosidase A

Short nameA-Galactosidase A SerPl-cCnc

ComponentAlpha galactosidase A

PropertyCCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassCHEM

Example unitsnmol/h/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.73

Consumer names

Alpha Galactosidase A, Blood

Part names

Alpha galactosidase ACCncPtSer/PlasQnCatalytic ConcentrationPoint in time (spot)Serum or Plasma

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.