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GTR Home > Tests > Huntington Disease (HD) Mutation by PCR

How to order

Test Order CodeHelp: 40018

How To Order

Laboratory's Test Page



How To Order


Collect: Lavender (EDTA), pink (K2EDTA), or yellow (ACD Solution A or B). Specimen Preparation: Transport 5 mL whole blood. (Min: 3 mL) Storage/Transport Temperature: Refrigerated. Remarks: A completed HD specific consent form, signed by the patient (or legal guardian) and physician, is required for all specimens. Testing for patients under the age of 18 years or fetal specimens is not offered. Presymptomatic patients are strongly encouraged to go through a counseling program approved by the Huntington Disease Society of America at (800) 345-4372. Call Genetics Processing with additional questions at 800-242-2787 ext 3301.
Order URL Help: http://www.aruplab.com/genetics/ordering

Informed Consent Required Help: Yes

Specimen Source

  • Peripheral (whole) blood

Specimen requirements: http://ltd.aruplab.com/tests/pub/0040018

Test Codes


Other test codes on lab website

Test Orderable By

  • Genetic Counselor
  • Health Care Provider
  • Licensed Physician
  • Nurse Practitioner
  • Physician Assistant

Testing Strategy


If an expanded allele is detected by PCR and capillary electrophoresis, but cannot be sized (typically due to large expansions greater than 80 repeats), Southern blot will be added to determine the size of the expanded CAG repeat.

Ordering Requirements

Genetic Counseling Required Pre-test Help
Genetic Counseling Required Post-test Help

Contact Policy


  • Laboratory can only accept contact from health care providers. Patients/families are encouraged to discuss genetic testing options with their health care provider.

IMPORTANT NOTE: NIH does not independently verify information submitted to the GTR; it relies on submitters to provide information that is accurate and not misleading. NIH makes no endorsements of tests or laboratories listed in the GTR. GTR is not a substitute for medical advice. Patients and consumers with specific questions about a genetic test should contact a health care provider or a genetics professional.