antithrombin-iii levels were measured by means of a coagulation assay in plasma and by single radial immunodiffusion in plasma and serum.three groups could be distinguished : group i comprised the relations-in-law of family a , group ii the members of family a with a plasma antithrombin-iii level higher than 90 % of normal , when determined by the immunoassay , and group iii the members of family a with an antithrombin-iii level of less than 60 % .
C0229671
serum
C0032105
plasma