Test Overview
Test Methodology

Amplification of DNA to evaluate trinucleotide repeats.

Test Usage

To confirm the diagnosis of Huntington\'s disease or in the evaluation of related neurodegenerative disorders through the analysis of the allele size of the CAG repeat in the Huntington gene.

Reference Range *

Normal (10-26 repeats), premutation (27-35 repeats) or affected (36 repeats or greater). Interpretive report provided.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday
Analytic Time

7 - 14 days

Soft Order Code
HUNTD or HUNT2
MiChart Code
Huntington Disease Mutation Genetics (Sendout)
Synonyms
    Laboratory
    Sendout
    Reference Laboratory
    Fairview Diagnostic Laboratories
    Section
    Special Testing
    Specimen Requirements
    Collection Instructions

    Collect specimen in a yellow top (ACD) solution A (preferred) or lavender top tube. Send intact specimen refrigerated. Specimen must be accompanied by patient consent form available from MLabs. Both symptomatic and presymptomatic testing requires a signed informed consent form. Patient must be at least 18 years of age.

    Normal Volume
    10 mL ACD (preferred) or EDTA whole blood
    Minimum Volume
    2 mL ACD (preferred) or EDTA whole blood
    Additional Information

    Test sent to Fairview Diagnostic Laboratories.

    Billing
    CPT Code
    81401
    Fee Code
    22005
    LOINC
    21763-8
    NY State Approved
    No