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Duchenne/ Becker Muscular Dystrophy DNA Diagnostic Testing For (Obligate) Female Carriers Or Affected Females

OHSU Service Code:
102-8841
Lab Section:
Molecular Diagnostic Center
Synonyms:
Dystrophin Full Gene Analysis
Test Schedule:
Weekly. Result turnaround time 2-3 weeks.
Specimen
Requirements:
6.0 mL whole blood in EDTA vacutainer tube. For requisition slips.
Interpretation:
Professional interpretation required. Detection of dystrophin gene mutation in a female is diagnostic of DMD/BMD carrier status and the potential for manifestations of subtle dystrophin symptoms such as elevated cpk and enlarged calf muscles. An undetectable mutation does not rule out that a female is a carrier of or manifesting symptoms of DMD/BMD.
Comments:
Applicable in cases where evaluation of an affected male is not possible. These situations include: 1) a symptomatic carrier female; 2) an obligate female carrier to define the mutation within a family; 3) a female at risk to be a carrier in the absence of an affected male. Genetic counseling is strongly recommended for any family with a history of DMD/BMD. Consultation with the laboratory is preferred before drawing samples. Please call the laboratory at 503-494-5400 for further information.