Activated Factor X

Activated Factor X


Factor X (FX), as known as Stuart-Prower factor or prothrombinase, is the first member of the final common pathway (thrombin pathway) in the coagulation cascade. Activated by factor IXa or factor VIIa, Factor X turn into it’s activated form, factor Xa (FXa), which is capable of activating factor II (prothrombin) into thrombin.

Asnail provides bovine FXa for anti-FXa activity assay of heparin.


Origin Bovine plasma Purity electrophoretic purity
Appearance white lyophilized powder E1cm1%(280 nm) about 12
Molecular weight about 44 kDa Specific activity ≥ 90 IU/mg
EC number


  • Factor Xa can be used in many applications, such as:
  • Anti-factor Xa activity to anti-factor IIa activity ratios of heparin and LMWHs.
  • Anti-factor Xa activities of heparin and LMWHs.
  • Anti-factor Xa activities of heparin and LMWHs in human plasma.

Order information:

Cat. # Description Qty.
AS00-0121 Activated Factor X 10×71 nkat

Related Products:

Cat. # Description
AS00-0131 Alpha-Thrombin (FIIa)
AS00-0101 S-2238, Chromogenic Substrate for Thrombin
AS00-0102 S-2765, Chromogenic Substrate for Factor Xa
AS00-0103 S-2222, Chromogenic Substrate for Factor Xa
AS00-0132 Human Antithrombin

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