TFPI protein, encoded by the TFPI gene, is an important Kunitz-type serine protease inhibitor that regulates TF-dependent pathways in coagulation. It inhibits factor X and VIIa-TF proteases, preventing excessive clot formation. TFPI Protein, Human (HEK293, His) is the recombinant human-derived TFPI protein, expressed by HEK293 , with C-6*His labeled tag.