Vitamin K
prothrombin
K
Vitamin K corrects prothrombin in the setting of biliary obstruction but not of hepatocellular damage.
vitamin K, or, when rapid reversal is needed (such as in case of severe bleeding), with prothrombin complex concentrate.
Vitamin K status is measured by the prothrombin time test
prothrombin
Vitamin A is required for the synthesis of rhodopsin. That's why a deficiency of vitamin A can affect night vision.
Vitamin A
The Sun causes the synthesis of Vitamin D in the skin.
Yes, vitamin B1 is essential for its synthesis.
It decreases synthesis of thromboxane A2 and prostaglandins to increase bleeding time. It does not affect PT or PTT. Prothrombin time unaffected!
vitamin D