Enzyme assays for lysosomal storage disorders (LSDs) are performed by using either digital microfluidics (FDA authorized) or tandem mass spectrometry (MS/MS) platforms. Part 1 of the “Understanding Enzyme Assays for Lysosomal Storage Disorders” series outlines the difference between natural and artificial substrates and how they are deployed on each platform. Although MS/MS platforms are often already installed in most labs for metabolic assays, key differences in assay protocols and workflows need to be evaluated to examine if it would be feasible to share the equipment. Part 2 of this series explains this further and examines the time it takes for each method workflow, including the steps and equipment necessary.
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