Laboratory	Test Method	Prenatal	Carrier *
Baylor Research Institute, Institute of Metabolic Disease - Dallas, TX, USA	• Analyte
Dayton Children's Medical Center, Molecular and Biochemical Genetics Laboratory - Dayton, OH, USA	• Analyte
Denver Genetic Laboratories, UCD Biochemical Genetics Laboratory - Aurora, CO, USA	• Analyte
Duke University Health System, Pediatric Biochemical Genetics Lab - Durham, NC, USA	• Analyte
Medical Neurogenetics - Atlanta, GA, USA	• Analyte
Oregon Health and Science University, Knight Diagnostic Laboratories - Biochemical Genetics Laboratory - Portland, OR, USA	• Analyte
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 California San Diego, Biochemical Genetics Laboratory - La Jolla, CA, USA	• Analyte
Yale University School of Medicine, Biochemical Disease Detection Laboratory - New Haven, CT, USA	• Analyte

^* 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.