Appendix 1—figure 21. Abbott SARS-CoV-2 anti-nucleocapsid half-life and peak signal to cutoff (S/C) estimated in convalescent plasma by hospitalisation status.

Instead of estimating one half-life for each plasma donor, a different half-life was calculated for each pair of consecutive donations with decaying S/C reading. Box plots show the median (central lines), interquartile range (hinges), and range extending to 1.5 times the interquartile range from each hinge (whiskers).