Aquaporin-4 Autoantibody Detection by ELISA: A Retrospective Characterization of a Commonly Used Assay

Table 3

Additional testing in moderate positive by ELISA subgroup.

Diagnosis	Total	Retested	CBA^A,M		FACS^M
			(+)	(−)	(+)	(−)
NMOSD	9	5	2^A,M	1^M	1	1
Multiple sclerosis	2	1	0	1^A	0	1
Disseminated Lyme	1	1	0	1^A	0	1
Myelitis without LETM	1	1	0	0	0	1
Migraine	1	1	0	0	0	1

CBA: cell-based assay; FACS: fluorescence-activated cell sorting/flow cytometry; (+): positive result; (−): negative result; ^Aperformed at ARUP Laboratories; ^Mperformed at Mayo Medical Laboratories.