DMD and mucopolysaccharidosis: Other recent NBS activities within the state have included research and development in microfluidic instrumentation directed at mucopolysaccharidoses [81], validation of NBS for Fragile X using a custom FMR1 PCR assay system [305], and evaluation of a commercial assay for DMD NBS (CK-MM) and the DBS stability of CK-MM [306].