An Diagnostic Cohort on AQP4-Immunoglobulin G Detection Kit

An Diagnostic Cohort on Applicability and Accuracy of AQP4-Immunoglobulin G Detection Kit in the Diagnosis of Neuromyelitis Optica Spectrum Disorders

The diagnostic cohort study could will be use to verify the clinical performance of the AQP4 -immunoglobulin G detection kit and whether it has a good correlation with the clinical diagnosis results. The applicability and accuracy of the kit in clinical diagnosis will be verified according to the measured data.

Inclusion Criteria:

1. The patients who were diagnosed with NMOSD , and the cell-based assay was used to determine the AQP4-IgG-seropositive patients;
2. AQP4-IgG is negative in health people with age and sex matching and determined by cell-based assay;
3. Female or male, age 14-80;
4. Patients or authorized family members volunteered to participate in this study and signed informed consent.

Exclusion Criteria:

1. Patients with coagulation disorders;
2. Infection-related encephalitis;
3. Immune-related encephalitis;
4. A patient with severe mental illness who cannot cooperate clinically;
5. A patient with severe jaundice.