TAT 
2-4 weeks
CPT Code 
see information sheet
Test Code 
4103
Test Methods 
Repeat Expansion Testing
Specimen Types Accepted 
Blood
Saliva
Cultured Cells
Extracted DNA
Additional Information 
We do not bill insurance directly for RFC1 single gene repeat expansion testing.
Our lab is now offering RFC1 sequencing in addition to repeat expansion testing. To order, select Single Gene Sequencing on the requisition form. For test details, see Single Gene Sequencing Analysis.