Protease Inhibitor Levels in Human Plasma

Protease Inhibitor	Normal Plasma Range (mg/dl)

α2-Macroglobulin	260 ± 70
α1-Antitrypsin (α1-Proteinase	290 ± 75
α1-Antichymotrypsin	49 ± 7
Inter α-Trypsin Inhibitor	50
C1-Esterase Inhibitor	24 ± 3
Antithrombin III	24 ± 2
α2-Antiplasmin	7 ± 1