Table 1.

Plasma Coagulation Factors [19]

Factor	Common Names	Molecular Weight (kDa)	Plasma Concentration (mg/dl)
FI	Fibrinogen	340	200-400
FII	Prothrombin	72	12
FIII	Tissue Thromboplastin*	-	-
FIV	Divalent Calcium Ion**	-	2.2-2.5 mEq/l
FV	Proaccelerin (Labile Factor)	330	0.4-1.4
FVI	Not assigned***	-	-
Factor VII	Proconvertin (Stable Factor)	48	0.05-0.06
Factor VIII	Antihemophilic Factor	1000-12000	0.5-1
Factor IX	Christmas Factor	57	0.4-0.5
Factor X	Stuart Prower Factor	59	0.7-1.2
Factor XI	Plasma Thromboplastin Antecedent	160	0.4-0.6
Factor XII	Hageman Factor	80	1.5-4.5
Factor XIII	Fibrin Stabilizing Factor	320	1-2
Plasma prekallikrein	Fletcher factor	88	3.5-4.5
High Molecular Weight Kininogen	Fitzgerald, Williams, or Flaujeac factor	120	8-9
Plasminogen	-	92	20

Notes:

^*A lipoprotein complex principally located on cell membranes with 50<MW<330 kDa.

^**Total plasma calcium = 8.5-10.5 mg/dl.

^***FVI is no longer considered to be a coagulation following the discovery that FVI is actually an activated form of FV [110].