{"id":"aquaporin-4-antibody","name":"Aquaporin-4 (AQP4/NMO) IgG","shortName":"AQP4-IgG","aliases":["NMO-IgG","Aquaporin-4 Antibody","AQP4-IgG","Anti-AQP4","NMO/AQP4 Antibody","Aquaporin 4 Ab","Aquaporin 4 Antibody IgG","Aquaporin-4 IgG, Cell-Binding Assay","Neuromyelitis Optica (NMO)/Aquaporin-4-IgG FACS Assay, Serum","NMO/AQP4 FACS, S","Neuromyelitis Optica Antibody","NMO Antibody","Anti-Aquaporin-4 Antibody","AQP4 Antibody"],"abbreviations":["AQP4-IgG","AQP4-Ab","NMO-IgG"],"loinc":[{"code":"43638-6","primary":true},{"code":"95272-1","primary":false},{"code":"95273-9","primary":false},{"code":"68548-7","primary":false},{"code":"43752-5","primary":false}],"specimen":"serum","units":[],"referenceRanges":[],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"A blood test for an antibody to a water channel in the brain and spinal cord. It helps tell neuromyelitis optica spectrum disorder (NMOSD) from other nerve conditions.","url":"https://bloodtesttracker.com/markers/aquaporin-4-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."}