Vitamin K1

Message

Sendout, Mayo test code: VITK1

Test Code

LAB5210947

Alias/See Also

Phylloquinone
Phytonadione
Mephyton
Phytomenadione
Synthex
Konakion
VITK1

CPT Codes
84597

Preferred Specimen

2 mL of serum from a red tube

Patient Preparation
Fasting overnight (12-14 hours) (infants-collect prior to next feeding).

Minimum Volume

0.75 mL

Other Acceptable Specimens

Serum gel tube

Instructions

Centrifuge and aliquot serum into a plastic vial within 2 hours of collection.

Transport Container

Plastic vial

Transport Temperature

Refrigerated

Specimen Stability

Refrigerated (preferred): 30 days
Ambient: 30 days
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Gross hemolysis: OK
Gross lipemia: Reject
Gross icterus: OK

Methodology
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

FDA Status
Approved

Setup Schedule

Monday through Thursday

Report Available

2-5 days

Limitations

Testing of nonfasting specimens or the use of vitamin K1 supplementation can result in elevated serum vitamin K1 concentrations.

Reference Range

Included with report

Clinical Significance

Assessing circulating vitamin K1 concentration

Performing Laboratory
Mayo Clinic Laboratories, Rochester, Minnesota

Additional Information
Vitamin K1, Serum

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.