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Beaumont Laboratory

Myelin Associated Glycoprotein Antibody, IgM

Myelin-Associated Glycoprotein, MAG, Sulfoglucuronyl Paragloboside, SGPG, MAG Dual Antigen AutoantibodyTest, Myelin-Associated Glycoprotein (MAG) and Sulfoglucuronyl Paragloboside Evaluation, ARUP #51285, EPIC: LAB6609, SOFT: XMAGM

Specimen Collection Criteria

Collect (preferred specimen): One Gold-top SST tube.
Also acceptable: One plain Red-top tube.

Physician Office/Drawsite Specimen Preparation

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells within two hours of collection. Transfer serum to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Preparation for Courier Transport

Transport: 1.0 mL serum, refrigerated (2-8°C or 36-46°F). (Min: 0.1 mL)

Rejection Criteria

  • Hemolyzed specimens.
  • Severely lipemic specimens.
  • Specimens not collected and processed as indicated.


Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 48 hours
Refrigerated (2-8°C or 36-46°F): 14 days
Frozen (-20°C/-4°F or below): 1 year

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Sendout Laboratory with any questions.


Sent to ARUP Laboratories, Salt Lake City, UT.


Tuesday, Thursday, Saturday.
Results available in 2-5 days.

Reference Range

Less than 1000 TU. (TU = Titer Units)

Test Methodology

Semi-Quantitative Enzyme-Linked Immunosorbent Assay.


By report.

Clinical Utility

This assay aids in the diagnosis of demyelinating sensory and sensorimotor peripheral neuropathy.

CPT Code


Test Codes


Last Updated


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This directory currently reflects information only for specimens collected and/or processed at the Farmington Hills, Grosse Pointe, Royal Oak, and Troy campuses.