blood complement C3a des Arg level serum Complement C3a des Arg level 2019-02-15T16:07:08Z CMO:0003054 PMID:23799078 This is a measurement of the amount of C3a des Arg in a specified sample of serum, the clear liquid that separates from blood after it has clotted completely, i.e. blood plasma from which fibrinogen has been removed. C3a des Arg is formed from C3a via carboxypeptidase cleavage of the C-terminal arginine group. clinical_measurement_ontology serum Complement C3a des-Arg level sjwang