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Test ID 2OHGP 2-Hydroxyglutaric Aciduria Gene Panel, Varies


Ordering Guidance


The recommended first-tier test for 2-hydroxyglutaric aciduria is urine organic acids; order OAU/Organic Acids Screen, Urine.



Shipping Instructions


Specimen preferred to arrive within 96 hours of collection.



Specimen Required


Patient Preparation: A previous bone marrow transplant from an allogenic donor will interfere with testing. Call 800-533-1710 for instructions for testing patients who have received a bone marrow transplant.

Specimen Type: Whole blood

Container/Tube:

Preferred: Lavender top (EDTA) or yellow top (ACD)

Acceptable: Any anticoagulant

Specimen Volume: 3 mL

Collection Instructions:

1. Invert several times to mix blood.

2. Send specimen in original tube.

Specimen Stability Information: Ambient (preferred)/Refrigerated


Forms

1. New York Clients-Informed consent is required. Document on the request form or electronic order that a copy is on file. The following documents are available in Special Instructions:

-Informed Consent for Genetic Testing (T576)

-Informed Consent for Genetic Testing (Spanish) (T826)

2. Molecular Genetics: Biochemical Disorders Patient Information (T527) in Special Instructions

Useful For

Follow up for abnormal biochemical results suggestive of 2-hydroxyglutaric aciduria

 

Establishing a molecular diagnosis for patients with 2-hydroxyglutaric aciduria

 

Identifying variants within genes known to be associated with 2-hydroxyglutaric aciduria, allowing for predictive testing of at-risk family members

Genetics Test Information

This test utilizes next-generation sequencing to detect single nucleotide and copy number variants in 4 genes associated with 2-hydroxyglutaric aciduria: D2HGDH, IDH2, L2HGDH, SLC25A1. See Method Description for additional details.

 

Identification of a pathogenic variant may assist with diagnosis, prognosis, clinical management, familial screening, and genetic counseling for 2-hydroxyglutaric aciduria.

 

Additional first tier testing may be considered/recommended. For more information see Advisory Information.

Reporting Name

2-OH Glutaric Aciduria Gene Panel

Specimen Type

Varies

Specimen Minimum Volume

See Specimen Required

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Varies

Reference Values

An interpretive report will be provided.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed, and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

81479

LOINC Code Information

Test ID Test Order Name Order LOINC Value
2OHGP 2-OH Glutaric Aciduria Gene Panel In Process

 

Result ID Test Result Name Result LOINC Value
608764 Test Description 62364-5
608765 Specimen 31208-2
608766 Source 31208-2
608767 Result Summary 50397-9
608768 Result 82939-0
608769 Interpretation 69047-9
608770 Resources In Process
608771 Additional Information 48767-8
608772 Method 85069-3
608773 Genes Analyzed 48018-6
608774 Disclaimer 62364-5
608775 Released By 18771-6

NY State Approved

Yes

Day(s) Performed

Varies

Report Available

3 to 4 weeks

Method Name

Custom Sequence Capture and Targeted Next-Generation Sequencing followed by Polymerase Chain Reaction (PCR) and Sanger Sequencing