MAG Antibody, IgM
| Label Mnemonic: | MAG |
| Epic code: | LAB3533 |
| Downtime form: | A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery |
Commercial Mailout Laboratory
6240-8 RCP
356-8593
6240-8 RCP
356-8593
Specimen(s):
Serum
Collection Medium:
 |
| Red top tube 5 mL (Clot Activator) |
Minimum:
Preferred Minimum: 1.0 mL serum
Absolute Minimum: 0.1 mL serum
Absolute Minimum: 0.1 mL serum
Rejection Criteria:
Urine. Contaminated, heat inactivated, hemolyzed, severely lipemic
specimens.
Testing Schedule:
Weekly
Turn Around
Time:
1-4 days upon receipt at reference laboratory
Reference Range:
Less than 1000 Titer Units (TU)
Interpretive Data:
An elevated IgM antibody concentration greater than 999 TU against
myelin-associated glycoprotein (MAG) suggests active demyelination in
peripheral neuropathy. A normal concentration (less than 999 TU)
generally rules out an anti-MAG antibody-associated peripheral
neuropathy.
Methodology:
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
CPT Code:
83516