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Test ID 3MGAP 3-Methylglutaconic Aciduria Panel, Varies

Ordering Guidance

The recommended first-tier biochemical test 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


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


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 3-methylglutaconic aciduria


Establishing a molecular diagnosis for patients with 3-methylglutaconic aciduria


Identifying variants within genes known to be associated with 3-methylglutaconic 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 17 genes associated with 3-methylglutaconic aciduria: AGK, ATP5F1E, ATPAF2, AUH, CLPB, CPS1, DNAJC19, GFER, HMGCL, HTRA2, OPA3, POLG, SERAC1, SUCLA2, TAZ, TIMM50, TMEM70. See Targeted Genes and Methodology Details for 3-Methylglutaconic Aciduria Panel in Special Instructions and Method Description for additional details.


Identification of a pathogenic variant may assist with diagnosis, prognosis, clinical management, familial screening, and genetic counseling for 3-methylglutaconic aciduria.


Additional first-tier testing may be considered/recommended. For more information see Ordering Guidance.

Method Name

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

Reporting Name

3-Methylglutaconic Aciduria Panel

Specimen Type


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.

Day(s) Performed


Report Available

3 to 4 weeks

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 U.S. Food and Drug Administration.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
3MGAP 3-Methylglutaconic Aciduria Panel In Process


Result ID Test Result Name Result LOINC Value
608812 Test Description 62364-5
608813 Specimen 31208-2
608814 Source 31208-2
608815 Result Summary 50397-9
608816 Result 82939-0
608817 Interpretation 69047-9
608818 Resources In Process
608819 Additional Information 48767-8
608820 Method 85069-3
608821 Genes Analyzed 48018-6
608822 Disclaimer 62364-5
608823 Released By 18771-6

NY State Approved