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- W2022251904 abstract "The purpose of this study was to analyze antinuclear antibody (ANA) screening by enzyme-linked immunosorbent assay (ELISA) followed by indirect fluorescent antibody (IFA) testing to confirm and characterize the pattern and titer of the antibody. We evaluated 4 ANA ELISAs and 1 HEp-2 IFA substrate in 224 clinically defined serum samples consisting of 30 from systemic lupus erythematosus (SLE) cases, 94 from rheumatoid arthritis cases, and 100 from healthy donors plus 495 serum samples submitted for routine ANA testing and 12 reference serum samples distributed by the Centers for Disease Control and Prevention. IFA tests were read independently by 2 certified medical technologists. ELISA sensitivities ranged from 90% to 97% compared with 80% by IFA in the SLE serum samples. The ELISAs had specificities of 36% to 94%, whereas the IFA had 99% specificity. Overall, ELISAs for ANA assays demonstrated better sensitivity and good specificity, suggesting ELISA is a more cost-effective alternative to IFA testing for initial ANA screening. Samples positive by ANA ELISA should be tested on HEp-2 to determine the titer and pattern." @default.
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- W2022251904 date "2011-05-01" @default.
- W2022251904 modified "2023-10-06" @default.
- W2022251904 title "Enzyme-Linked Immunosorbent Assay Screening Then Indirect Immunofluorescence Confirmation of Antinuclear Antibodies" @default.
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- W2022251904 doi "https://doi.org/10.1309/ajcp6r8eelgodayw" @default.
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