Description

A vitamin K1 blood test measures the level of vitamin K1 in your blood to check for a deficiency. Vitamin K1 is a fat-soluble vitamin that's important for blood clotting, bone health, and heart disease prevention. 

Purpose

  • Detect vitamin K deficiency: A vitamin K1 blood test can help identify if you have a vitamin K deficiency. 
  • Assess blood clotting: The test can help determine how well your blood clots. 
  • Assess bone health: A vitamin K1 blood test can help assess your bone health. 
  • Assess cardiovascular health: A vitamin K1 blood test can help assess your cardiovascular health. 

Who should get tested? 

  • People with liver disease, celiac disease, or cystic fibrosis
  • People who take prolonged antibiotics or medications like warfarin

Symptoms of vitamin K deficiency 

  • Bruising easily
  • Bleeding more easily
  • Bone weakness
  • Increased risk of hemorrhage
  • Pale skin
  • Bloody stool

Fasting not required.