Aryl Sulphatase B MPS VI Test - Blood

Aryl Sulphatase B Test Overview

An enzyme called Aryl Sulphatase B is essential to the body's breakdown of several chemicals. Maroteaux Lamy/Mucopolysaccharidosis type VI (MPS VI) is a rare genetic condition that is being tested for diagnosis and monitoring.

The Aryl Sulphatase B test measures the activity of the enzyme arylsulfatase B (ARSB) in the body. This enzyme is essential for breaking down large sugar molecules known as glycosaminoglycans (GAGs), specifically dermatan sulfate and chondroitin sulfate, present in various tissues and organs. Doctors primarily use this test to diagnose and monitor mucopolysaccharidosis type VI (MPS VI), also called Maroteaux-Lamy syndrome.

MPS VI is a lysosomal storage disorder resulting from a deficiency of the ARSB enzyme, causing GAGs to build up in the body. This build-up leads to symptoms like skeletal abnormalities, joint stiffness, clouded corneas, and progressive intellectual decline. The Aryl Sulphatase B test enables healthcare professionals to identify individuals with MPS VI, track the disease's progression, and evaluate treatment effectiveness.