Vitamin K
Label Mnemonic: VTK
Epic Lab Code: LAB4258
Downtime Form: A-1a Miscellaneous Request
Commercial Mail-out Laboratory
5231 RCP
Collection Medium:
Red top tube 5 mL (Clot Activator)
Preferred Minimum: 1.0 mL serum
Absolute Minimum: 0.6 mL serum
Rejection Criteria:
Any specimen other than serum or EDTA plasma. Hemolyzed specimens.
Delivery Instructions:
Wrap specimen in aluminum foil to protect from light. Deliver to laboratory immediately after collection.
Turn Around Time:
2-5 days upon receipt at reference laboratory
Reference Range:
0.22-4.88 nmol/L
Interpretive Data:
Vitamin K concentration is reported as nanomoles per liter (nmol/L). To convert concentration to nanograms per milliliter (ng/mL), multiply the result by 0.45.
Overnight 12 hour fast preferred. Do not consume alcohol for one day prior to blood draw. Avoid hemolysis. Separate samples must be submitted when multiple tests are ordered.
Quantitative High Performance Liquid Chromatography
CPT Code:
See Additional Information:
Specimens Requiring Immediate Delivery