Laboratory	Test Method	Prenatal	Carrier *
Baylor Research Institute, Institute of Metabolic Disease - Dallas, TX, USA	• Analyte
Medical Neurogenetics - Atlanta, GA, USA	• Sequence analysis of the entire coding region • Analyte • Enzyme assay
Radboud University Nijmegen Medical Centre, Genome Diagnostics Nijmegen - Nijmegen, Netherlands	• Sequence analysis of the entire coding region
Stanford Clinical Laboratories, Biochemical Genetics Laboratory - Palo Alto, CA, USA	• Analyte
Universidad Autonoma de Madrid, Centro de Diagnostico de Enfermedades Moleculares - Madrid, Spain	• Sequence analysis of the entire coding region • Analyte
University of Amsterdam Academic Medical Center, Laboratory Genetic Metabolic Diseases - Amsterdam, Netherlands	• Sequence analysis of the entire coding region • Analyte • Enzyme assay

^* Carrier column is relevant to autosomal recessive and X-linked inheritance; column will be blank when it is not relevant (e.g. autosomal dominant inheritance, microdeletions/duplications) and/or is not offered by the lab.