CD40LG and COVID-19: The aim of this study is to compare the BIOSYNEX COVID-19 BSS IgM/IgG rapid test (BIOSYNEX, Illkirch-Graffenstaden, France) with the fully automated MAGLUMI 2019-nCoV IgM and IgG (SNIBE – Shenzhen New Industries Biomedical Engineering, Shenzhen, China), which we have recently implemented in our laboratory.