MYELIN ASSOCIATED GLYCOPROTEIN (MAG) ANTIBODY (IgM), WESTERN BLOT, SERUM

Additional Codes

Software	Test Code
SoftID	MGABR
EPIC	LAB20210
Quest Diagnostics	10063

Performing Laboratory

Quest Diagnostics

Useful For

Detecting antibodies associated with autoimmune peripheral neuropathy

Method Name

Western Blot (WB)

Reference Values

MAG Ab (IgM), WB – Negative

MAG-SGPG Ab (IgM), EIA – <1:1600 titer

MAG Ab (IgM), EIA – <1:1600 titer

MAG Antibody (IgM), EIA

Normal – <1:1600

Moderately elevated – 1:1600-1:3200

Highly elevated – >1:6400

Days and Times Test Performed

Monday through Saturday

Report Available

11-14 Days

Specimen Type

Serum

Preferred Container

Red Top Tube

Preferred Volume

Serum: 2 mL (Red Top Tube)

Minimum Volume

Serum: 1 mL (Red Top Tube)

Specimen Collection and Handling

Spin specimen, separate from clot and send refrigerated.

Note: Overnight fasting is preferred.

Specimen Stability Information

Specimen Type: Serum

Frozen: 30 Days

Refrigerated: 7 Days

Room Temp: 24 Hours

Add On Capable

Contact Reference Lab – If add-on can never be done, report the test to the Administrative Analyst

Advance Beneficiary Notice Requirements

No ABN Required

CPT Code Information

CPT Code	CPT Description	CPT Disclaimer
83520 x2	Immunoassay for Analyte other than Infectious Agent Antibody or Infectious Agent Antigen, Quantitative, Not Otherwise Specified	if Indicated
84181	Protein, Electrophoretic Fractionation and Quantitation, Western Blot, with Interpretation and Report, Blood or Other Body Fluid

Performing Laboratory Location