LOINC Code 21328-0: Beta-N-acetylhexosaminidase A and B (Bld) [Interp]

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 A & B. It is commonly used with the system or sample type Bld.

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

• Beta-N-acetylhexosaminidase A and B [Interpretation] in Blood
• Beta-N-acetylhexosaminidase A & B
• Assay is specifically for Sandoff disease; % HEX A and % HEX B is measured but result is only interpretation
• A,B; B; Beta-hexosaminidase subunit alpha; Blood; B-NAH; Chemistry; GM2 Gangliosidoses; GM2-gangliosidosis; Hex A; Hex B; HEXA; Hexosaminidase; Hexosaminidase A; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; Nominal; Point in time; Random; Sandhoff disease; Sandhoff Disease, Adult; Tay Sachs Disease; Tay-Sachs disease; WB; Whole blood

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

Frequently asked questions