LOINC Code 93852-2: N-Acetylgalactosamine-4-Sulfatase/N-Acetylgalactosamine-6-Sulfatase (U) [Catalytic ratio]

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 N-acetylgalactosamine-4-sulfatase/N-acetylgalactosamine-6-sulfatase. It is commonly used with the system or sample type Urine.

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

• N-Acetylgalactosamine-4-Sulfatase/N-Acetylgalactosamine-6-Sulfatase [Enzymatic activity ratio] in Urine
• N-acetylgalactosamine-4-sulfatase/N-acetylgalactosamine-6-sulfatase
• The ratio of N-acetylgalactosamine 4-sulfatase to N-acetylgalactosamine 6-sulfatase helps differentiate between Morquio A syndrome and Maroteaux-Lamy syndrome. Morquio A syndrome (mucopolysaccharidosis type IVA) is associated with a deficiency of N-acetylgalactosamine 6-sulfatase, while Maroteaux-Lamy syndrome (mucopolysaccharidosis VI), is associated with a loss or decreased activity of N-acetylgalactosamine 4-sulfatase.
• Aryl sulfatase B; Arylsulfatase B; Catalytic Concentration Ratio; Catalytic Ratio; CCrto; Chemistry; Chondroitin sulfatase; Chondroitinase; Enzymatic activity ratio; Galactose-6-sulfate sulfatase; GalN6S; GalNAc6S sulfatase; GALNS; Maroteaux-Lamy disease; Morquio disease, type A; MPS VI; MPS VI A; Point in time; QNT; Quan; Quant; Quantitative; Random; rh4S; rhASB; UA; UR; Urn

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