Polymerase Chain Reaction (PCR)/size analysis by capillary electrophoresis methylation-specific PCR to confirm fmr1 expansions on cgg repeat lengths of 55 or greater.
Rejection Criteria
Heparinized samples
Reference Range(s)
By Report
Specimen Requirements
Preferred Specimen
EDTA (lavender top) tube
Minimum Volume
5 mL whole blood
Sample Stability
7 days room temperature 1 month refrigerated 1 month frozen
Transport Temperature
Refrigerated
Collection Instructions
Fill EDTA tube and gently mix by inverting the tube 8-10 times. Refrigerate. Note: Prior authorization is required by certain insurance products and state Medicaid programs. Please contact providers and follow instructions for authorization prior to ordering this test. If authorized, please provide documentation when submitting the order.