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Vitamin K Assay Serum Blood Test - Genova Test Kit

The Vitamin K Assay Serum Blood Test measures Vitamin K, a fat-soluble vitamin that functions as a cofactor in the production of blood coagulation factors (in the liver), osteocalcin (in bone), and matrix Gla-proteins (in cartilage and vessel walls), each resulting in the deposition of ionic calcium.  Note: This is a pre-paid shipping test kit that will be mailed and it requires a blood draw. Please Click Here to locate a lab for specimen collection.
Sample Report

Test Code: GD3519

Also Known As:


Preparation: 8-10 hours fasting is required. Do not stop nutritional supplements prior to testing. Abnormalities that may be found will reveal needs that have not been met by recent supplement intake. Specimen must be sent to lab by overnight mail Monday-Thursday only. Please read patient instructions very carefully prior to beginning the test.

Test Results: 10-12 days once the lab receives the specimen. May take longer based on weather, holiday or lab delays.


Monitoring vitamin K can help reduce risk of osteoporotic bone fractures, cardiovascular disease, and possibly some cancers by identifying individuals who may have a vitamin K deficiency. Since current dietary recommendations of vitamin K are based on saturation of the coagulation system, those recommendations may be insufficient to maintain vascular and bone health, since individual functions are independent of each other.

Vitamin K status is especially important in individuals:

  • With cardiovascular disease or those with a family history of arteriosclerosis
  • At high risk of bone loss, such as pre- and post- menopausal women or those with a family history of osteoporosis
  • On certain drug therapies, particularly blood thinners, such as warfarin or aspirin
  • On restricted diets
  • On long-term antibiotic therapies

Symptoms & conditions related to vitamin K deficiency:

  • Bruising
  • Epistaxis
  • Fractures
  • Gastrointestinal bleeding
  • Menorrhagia
  • Hematuria
  • Nosebleeds
  • Anemia
  • Osteopenia/Osteoporosis
  • Calcification of soft tissue, especially heart valves
  • Digestive problems, especially malabsorption
  • Cardiovascular Disease
  • Cancer
  • Malabsorption syndromes

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