A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Myelin Associated Glycoprotein (MAG) Antibody, with Reflex to MAG-SGPG and MAG, EIA
Test Code10063
CPT Codes
84181
Includes
If MAG Antibody (IgM), WB is positive, then MAG-SGPG Antibody (IgM), EIA and MAG Antibody (IgM), EIA, will be performed at an additional charge (CPT code(s): 83520 x2)
Preferred Specimen
2 mL serum collected in a red-top tube (no gel)
Patient Preparation
Overnight fasting is preferred
Minimum Volume
1 mL
Instructions
Avoid hemolysis
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 24 hours
Refrigerated: 7 days
Frozen: 30 days
Refrigerated: 7 days
Frozen: 30 days
Methodology
Western Blot (WB)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Mon, Wed; Report available: 7-12 days
Reference Range
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 |
Clinical Significance
MAG, Western Blot with reflexes is useful in detecting antibodies associated with autoimmune peripheral neuropathy.
Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA |
33608 Ortega Highway |
San Juan Capistrano, CA 92675-2042 |