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LOINC Code 12913-0: Beta-N-acetylhexosaminidase (WBC) [Catalytic activity/Vol]

12913-0 is a LOINC code used to identify Beta-N-acetylhexosaminidase (WBC) [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 Beta-N-acetylhexosaminidase. It is commonly used with the system or sample type WBC.

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 Beta-N-acetylhexosaminidase. It is commonly used with the system or sample type WBC.

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

  • Beta-N-acetylhexosaminidase [Enzymatic activity/volume] in Leukocytes
  • Beta-N-acetylhexosaminidase
  • B; B-NAH; Catalytic Concentration; Chemistry; GM2-gangliosidosis; Hex A; Hex B; HEXA; Hexosaminidase; Leukocytes; Point in time; QNT; Quan; Quant; Quantitative; Random; Sandhoff disease; Tay Sachs Disease; WBCs; White blood cells

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

Beta-N-acetylhexosaminidase (WBC) [Catalytic activity/Vol]Beta-N-acetylhexosaminidase [Enzymatic activity/volume] in LeukocytesB-NAH WBC-cCncBeta-N-acetylhexosaminidaseCHEMBeta-N-acetylhexosaminidase, White blood cellsCCnc

Frequently asked questions

Code details

Code12913-0
SystemLOINC
Display nameBeta-N-acetylhexosaminidase (WBC) [Catalytic activity/Vol]
DescriptionBeta-N-acetylhexosaminidase
Short nameB-NAH WBC-cCnc
ComponentBeta-N-acetylhexosaminidase
PropertyCCnc
TimingPt
System (specimen)WBC
ScaleQn
ClassCHEM
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.73

Consumer names

Beta-N-acetylhexosaminidase, White blood cells

Part names

Beta-N-acetylhexosaminidaseCCncPtWBCQnCatalytic ConcentrationPoint in time (spot)White 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.