Item Value
Test name Huntington's Disease Triplet Repeat
Available Stat? No
Turn around times 10-14 days
In House Availability Run once per 1-2 weeks or as needed
Performed by Medical Genomics - Molecular Diagnostics
Normal range Normal, CAG repeat sizes less than 27.
Container type Lavender top preferred, Blue top and Yellow (ACD) tops acceptable
Amount to Collect 3 mL blood
Collection Instructions All patients must receive genetic counseling prior to pre-symptomatic Huntingtons testing. The name of the genetic counselor who provided counseling must be included on the test requisition. For genetic counseling questions, contact Jamie Fong at 476-8613.

If collecting in citrate, check the expiration date on the label of the blue top vacutainer before drawing the patient.

Do not collect sample in heparin. Keep sample refrigerated for overnight or longer storage.

For UCSF Samples (from remote sites) Click here for sample collection instructions

For NON-UCSF Samples Click here for Requisition form & Account set-up instructions. Note we only do institutional billing.
Sample type EDTA, citrated or ACD whole blood

If you have additional questions regarding this test, please call: 415-353-1667