Table 7: Comparing HCP levels (ng/mg) of different in-process samples from different hosts (MAbs A–D) calibrated with the four different CHO HCP standards and detected by the anti-CHO DG44 antibody; for this ELISA, wells were coated with the anti-CHO DG44 HCP antibody and detected with the biotinylated anti-CHO DG44 HCP antibody in a sandwich format. Standards for calibration were used as indicated in the top row. The ratio of H to L was calculated by dividing the highest value (bold) by the lowest value (italics).
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