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. 2019 Mar 1;202(8):2210–2219. doi: 10.4049/jimmunol.1801295

Table II. AChR-positive screening result validation by RIA.

Identification/Specimen Δ% Positive Screening CBA Δ cpm RIA
SLE 12.5 2,469
HD (SLE) 15.5 −323
SLE-neuro 1 25.3 −345
SLE-neuro 2 15.7 −20
SLE-neuro 3 11.4 −246
Positive control CBA 80.0 NA
Negative control CBA 0.3 NA
Positive control RIA NA 15,032
Negative control RIA NA 86

Results of validation RIAs (5 μl of serum, whole Ag) are reported. Δ cpm cutoff = 363 (mean + 3 SD).

CBA, cell-based immunofluorescence assay.