{"id":"achr-binding-antibody","name":"Acetylcholine Receptor (AChR) Binding Antibody","shortName":"AChR Binding Ab","aliases":["AChR Binding Antibody","Acetylcholine Receptor Binding Antibody","Acetylcholine Receptor Binding Ab","ACHR Binding Antibodies","Acetylcholine Receptor (Muscle) Binding Ab","ACh Receptor (Muscle) Binding Ab","Acetylcholine Binding Antibody","Muscle nicotinic Acetylcholine Receptor (AChR) Binding Antibody"],"abbreviations":["AChR binding Ab"],"loinc":[{"code":"11034-6","primary":true},{"code":"97558-1","primary":false},{"code":"11560-0","primary":false},{"code":"43624-6","primary":false}],"specimen":"serum","units":[{"ucum":"nmol/L","display":"nmol/L"}],"referenceRanges":[{"population":"Adults","low":0,"high":0.3,"unit":"nmol/L","unitDisplay":"nmol/L","note":"Negative at or below 0.30 nmol/L on the Quest assay. The cutoff depends on the assay and the lab: ARUP calls 0.4 nmol/L or less negative (0.5 or more positive), and Mayo Clinic Laboratories uses 0.02 nmol/L or less. Use the cutoff printed on your own report, because numbers from different labs are not interchangeable.","sources":[{"title":"Acetylcholine Receptor Binding Antibody (test code 206)","url":"https://testdirectory.questdiagnostics.com/test/test-detail/206?cc=MASTER","publisher":"Quest Diagnostics"},{"title":"Acetylcholine Receptor Binding Antibody (test 0080009)","url":"https://ltd.aruplab.com/Tests/Pub/0080009","publisher":"ARUP Laboratories"},{"title":"Myasthenia Gravis Evaluation with Muscle-Specific Kinase (MuSK) Reflex, Serum (test MGMR)","url":"https://www.testcatalog.org/show/MGMR","publisher":"Mayo Clinic Laboratories"}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Looks for antibodies that attack the acetylcholine receptor on muscle cells. A positive result is linked to myasthenia gravis, a condition that causes muscle weakness.","url":"https://bloodtesttracker.com/markers/achr-binding-antibody","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}