An acetylcholine receptor (AChR) antibody test is used to help diagnose myasthenia gravis (MG) and to distinguish it from other conditions that can cause similar symptoms, such as chronic muscle fatigue and weakness. Three types of AChR antibodies can be tested: Antibodies that bind to AChR. AChR blocking antibodies.
| Also Known as | AChR Antibody, Muscle nicotinic Acetylcholine Receptor (AChR) Binding Antibody, Myasthenia Gravis Antibodies, Acetylcholine Receptor Binding Antibody, Acetylcholine Receptor Blocking Antibody, Acetylcholine Receptor Modulating Antibody, Myasthenia Gravis (MG) Evaluation, Acetylcholine Receptor (AChR) Antibody |
| Test Purpose | To help diagnose myasthenia gravis (MG) and to distinguish between MG and other conditions with similar symptoms |
| Test Preparations | Avoid General Anaesthetic Or Muscle Relaxant Drugs 24 Hours Prior To Sampling. This Assay Should Not Be Requested For Patients Who Have Recently Received Radio-Isotopes Therapeutically Or Diagnostically Due To Potential Assay Interference. |
| Test Components | AChR Antibody |
| Specimen | 2 ML (1 ML Min.) Serum From 1 SST. Ship Refrigerated Or Frozen. |
| Stability Room | 8 Hrs |
| Stability Refrigerated | 1 Week |
| Stability Frozen | 4 Weeks |
| Method | Enzyme Immunoassay |
| Download Report | Download Report |
Why get tested:
To help diagnose myasthenia gravis (MG) and to distinguish between MG and other conditions with similar symptoms
When to get tested:
When you have symptoms that suggest MG, such as drooping eyelid, double vision, difficulty chewing or swallowing, and / or weakness in specific voluntary muscles.
Normal Value:
Negative: < 0.25 nmol/L
Equivocal: 0.25 – 0.40 nmol/L
Positive: > 0.4 nmol/L
Possible References Used
