TAT 
2-4 weeks
CPT Code 
RFC1 - 0378U
FGF14 - 81479
ATXN1 - 81178
ATXN2 - 81179
ATXN3 - 81180
CACNA1A - 81184
ATXN7 - 81181
ATXN8OS - 81182
ATXN10 - 81183
ATN1 - 81177
FMR1 - 81243
FXN - 81284
PPP2R2B - 81343
TBP - 81344
Test Code 
4103
Test Methods 
Repeat Expansion Testing
Specimen Types Accepted 
Blood
Saliva
Cultured Cells
Extracted DNA
Additional Information 
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.
For ATXN10 (SCA10), our assay will not be able to distinguish between reduced and full penetrance alleles.