Where are coagulation factors produced?

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Multiple Choice

Where are coagulation factors produced?

Most coagulation factors are made in the liver. Hepatocytes synthesize fibrinogen and the vitamin K–dependent factors II, VII, IX, and X, along with several other procofactors that circulate in blood. Because the liver supplies these proteins, any significant liver dysfunction lowers their levels and can prolong clotting tests, leading to a higher bleeding tendency. There are some nuances, such as factor VIII being produced mainly by endothelial cells rather than hepatocytes, but the dominant site for producing the majority of coagulation factors is the liver.

Most coagulation factors are made in the liver. Hepatocytes synthesize fibrinogen and the vitamin K–dependent factors II, VII, IX, and X, along with several other procofactors that circulate in blood. Because the liver supplies these proteins, any significant liver dysfunction lowers their levels and can prolong clotting tests, leading to a higher bleeding tendency. There are some nuances, such as factor VIII being produced mainly by endothelial cells rather than hepatocytes, but the dominant site for producing the majority of coagulation factors is the liver.

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