<p>#CMT# #/CMT# The in vitro method comprises preparing a suspension of microbeads in a liquid suspension medium, loading the suspension of microbeads with beta 2GPI proteins in a buffer either by coupling in a passive manner in a suspension medium, or using a chemical bonding protocol, contacting the microbeads with the fluid medium in a container in a condition suitable for a fixation of bacteria on the proteins without the presence of oxidizing metal ions, separating the prepared microbeads from the suspension medium by centrifugation, and evacuating the suspension medium from the container. #CMT# : #/CMT# The in vitro method comprises preparing a suspension of microbeads in a liquid suspension medium, loading the suspension of microbeads with beta 2GPI proteins in a buffer either by coupling in a passive manner in a suspension medium, or using a chemical bonding protocol, contacting the microbeads with the fluid medium in a container in a condition suitable for a fixation of bacteria on the proteins