Tests

Vitamin K Test

Updated: Apr 15, 2026 Published: Nov 02, 2023 Medical Team 2 min read

    Vitamin K is a fat-soluble vitamin that plays a crucial role in blood clotting and bone health. The Vitamin K test measures the levels of vitamin K in the blood.

    Pre-test preparation: No specific preparation is required for the Vitamin K test.

    Testing method: The Vitamin K test is usually performed on a blood sample obtained by a venipuncture. The sample is then sent to a laboratory for analysis.

    Common symptoms for prescribing this test: The Vitamin K test is typically ordered when a person has symptoms of vitamin K deficiency, such as easy bruising, excessive bleeding, or slow blood clotting. It may also be ordered as part of a routine evaluation of overall health or as part of a larger nutritional assessment.

    Diagnosis: Vitamin K deficiency is diagnosed when the level of vitamin K in the blood is below a certain threshold.

    Reference range: The reference range for Vitamin K varies depending on the laboratory and the method used to measure it, but it typically ranges from 0.1-2 ng/mL.

    Normal values: A normal Vitamin K test result is usually between 0.1-2 ng/mL.

    Medical disclaimer: The information provided is for educational purposes only and is not intended to replace the advice of a healthcare professional. It is important to consult with a qualified healthcare provider for proper diagnosis and treatment.

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