Adsorbent for lowering the concentration of fibrinogen and / or fibrin, using the adsorbent for producing an adsorber and the adsorber with the adsorbent

The invention relates to an adsorbent for lowering the concentration of fibrinogen and / or fibrin in blood or blood plasma, comprising a matrix and covalently bound to the matrix, synthetic side chains. The side chains have at least two amino groups whose nitrogen atoms are separated in the chain at least 2.6 Angstroms of one another, and have no peptides and aromatic groups. Advantageously, the at least two amino groups are separated by 4 to 6 carbon atoms. The invention further relates to the use of the adsorbent for producing an absorber for lowering the concentration of fibrinogen and / or fibrin in blood or blood plasma, as well as DOLLAR A adsorber itself. The matrix can in principle consist of any medium, but has preferably porous unaggregated, spherical particles in a particle size range of 50 to 250 mum, which have an exclusion limit of at least 10 · 7 · Dalton.