FSAP-inhibitor complexes in plasma of sepsis patients and healthy controls. FSAP-AP (A) and FSAP-C1-inh (B) complexes were measured in citrated plasma from 40 patients with severe sepsis or septic shock. FSAP-inhibitor complexes were expressed as AU/ml. Plasma of 20 healthy donors was taken as a control. Median values at a given time have been compared by using Mann Whitney Rank Sum test. *** indicates a P < 0.001.