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However, over 5 years follow-up, there was modest variation in ANA assay performance. In clinical situations where the SLE diagnosis is being considered, a negative test by either the ELISA or HEp-2 ...

As a result, different systems have been developed which automate part of or the complete IFA method and reading process. Objectives This study compares 2 commercially available HEp-2 antinuclear ...