|
|
| 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 # |
Myasthenia Gravis Panel 2 with Reflex to MuSK Antibody
Test Code93859
CPT Codes
86041, 86042, 86043
Includes
Acetylcholine Receptor Blocking Antibody, Acetylcholine Receptor Binding Antibody, *Acetylcholine Receptor Modulating Antibody
If AChR blocking is <15% of inhibition, AChR binding is ≤0.30 nmol/L, and AChR modulating is <32% binding inhibition, then MuSK Antibody Test will be performed at an additional charge (CPT code(s) 86366).
If AChR blocking is <15% of inhibition, AChR binding is ≤0.30 nmol/L, and AChR modulating is <32% binding inhibition, then MuSK Antibody Test will be performed at an additional charge (CPT code(s) 86366).
Preferred Specimen
3 mL serum
Minimum Volume
0.7 mL
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 72 hours
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Lipemia • Microbially contaminated
Methodology
Immunoassay (IA)
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 FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: See individual assays; Report available: 8 days
Reference Range
See Laboratory Report
Clinical Significance
Myasthenia gravis (MG) is an autoimmune disorder affecting the neuromuscular junction. 80% of patients with generalized MG have serum antibodies to AChR - Blocking, Binding, or Modulating. Antibodies to MuSK make up a variable proportion of the remaining 20%.
