Vitamin K is a topic covered in the Davis's Lab & Diagnostic Tests.

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Phylloquinone, phytonadione.

Common Use:
Assessment of vitamin K levels to assist in diagnosing bleeding disorders where etiology is unknown, identify vitamin toxicity, and evaluate symptoms related to chronic antibiotic use.

Serum collected in a red-top tube.

Normal Findings:
(Method: High-performance liquid chromatography)

Conventional UnitsSI Units (Conventional Units × 2.22)
0.13–1.19 ng/mL0.29–2.64 nmol/L

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