Figure 1From: Evaluation and optimization of a commercial enzyme linked immunosorbent assay for detection of Chlamydophila pneumoniaeIgA antibodies Reproducibility of the SeroCP IgA ELISA assay. ODs at 450 nm were obtained from two ELISA tests conducted on the same serum samples on two different days. The differences between OD 450 nm values were less than 20%.Back to article page