Referred Tests
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|---|---|
| Email: | mcl@mayo.edu |
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| Values are valid only on day of printing. | |
Test ID: MGA1
Myasthenia Gravis (MG) Evaluation, Adult, Serum
Useful For 
Suggests clinical disorders or settings where the test may be helpful
Initial evaluation of patients aged 20 or older with symptoms and signs of acquired myasthenia gravis (MG)
Bone marrow transplant recipients with suspected graft-versus-host disease, particularly if weakness has appeared
Confirming that a recently acquired neurological disorder has an autoimmune basis (eg, MG)
Providing a quantitative baseline for future comparisons in monitoring a patient's clinical course and the response to immunomodulatory treatment
Raising likelihood of neoplasia
Profile Information A profile is a group of laboratory tests that are ordered and performed together under a single Mayo Test ID. Profile information lists the test performed, inclusive of the test fee, when a profile is ordered and includes reporting names and individual availability.
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| MGEAI | MG Adult Interpretation, S | No | Yes |
| ARBI | ACh Receptor (Muscle) Binding Ab | Yes | Yes |
| ARMO | ACh Receptor (Muscle) Modulating Ab | No | Yes |
| STR | Striational (Striated Muscle) Ab, S | Yes | Yes |
Reflex Tests Lists tests that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial tests.
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| GD65S | GAD65 Ab Assay, S | Yes | No |
| CRMWS | CRMP-5-IgG Western Blot, S | Yes | No |
| GANG | AChR Ganglionic Neuronal Ab, S | No | No |
| VGKC | Neuronal (V-G) K+ Channel Ab, S | No | No |
Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.
If acetylcholine receptor (AChR) modulating antibodies are > or =90% and striational antibodies are > or =1:120, then AChR ganglionic neuronal autoantibody, glutamic acid decarboxylase autoantibody, neuronal voltage-gated potassium channel autoantibody, and CRMP-5-IgG Western blot will be performed at an additional charge.
See Myasthenia Gravis: Adult Diagnostic Algorithm in Special Instructions.
Special Instructions Library of PDFs including pertinent information and forms related to the test
Method Name A short description of the method used to perform the test
ARBI, ARMO, GANG, VGKC: Radioimmunoassay (RIA)
STR: Enzyme Immunoassay (EIA)
NY State Available Indicates the status of NY State approval and if the test is orderable for NY State clients.
Reporting Name Lists a shorter or abbreviated version of the Published Name for a test
Aliases Lists additional common names for a test, as an aid in searching
Ach Receptor Ab
ACh Receptor Blocking Ab
AChR (Acetylcholine Receptor)
Anti-Skeletal Muscle Antibodies
Binding, Blocking, and Modulating Abs
Blocking Ab
GAD65 (Glutamic Acid Decarboxylase)
Glutamate Decarboxylase Antibodies (GAD65)
Muscle End-Plate Antibodies
Myasthenia Gravis Antibodies
Myoid Antibody
Neuronal Potassium Channel Ab
Potassium Channel Antibodies (specify)
Striational (Striated Muscle) Antibodies
VGKC
VGPC
Voltage-Gated Potassium Channel Ab