How does a Hexosaminidase A Enzyme Assay work?

Question

Hex A is the enzyme that helps break down gangliosides. when it is missing, tay sachs disease is the result. How would an enzyme assay of Hex A work?

Answer 1

an enzyme assay of Hex A is an experiment that would try to quantitate how much Hex A helps break down ganglisodies....so perhaps how much faster does the process work because of Hex A?