Lab Test

Vitamin K1, Serum

Test Codes

Mayo: VITK1, EPIC: LAB6183, Beaker: XVITK

Instructions

Patient should be fasting for 12 hours prior to specimen collection.

Specimen Collection Criteria

Collect (preferred specimen): One plain Red-top tube.
Also acceptable: One Gold-top SST tube. 

Physician Office/Draw Specimen Preparation

Centrifuge to separate serum from cells within one hour of collection. Transfer serum to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Preparation for Courier Transport

Transport: 2.0 mL serum, refrigerated (2-8°C or 36-46°F). (Minimum: 0.8 mL)

Rejection Criteria

Lipemic specimens.

Specimens not collected and processed as indicated.

In-Lab Processing

Centrifuge to separate serum from cells within one hour of collection. Transfer serum to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Transport: 2.0 mL serum, refrigerated (2-8°C or 36-46°F). (Minimum: 0.8 mL)

Storage

Specimen Stability for Testing:

Room temperature (20-26°C or 68-78.8°F): 30 days
Refrigerated (2-8°C or 36-46°F): 30 days
Frozen (-20°C/-4°F or below): 30 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to Mayo Clinic Laboratories in Rochester, MN.

Performed

Monday – Friday.
Results available in 3-5 days.

Reference Range

By report.

Test Methodology

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

Interpretation

By report.

Clinical Utility

This assay provides specific quantitation of Vitamin K1 levels.

CPT Codes

84597
LOINC:  9622-2

Contacts

Last Updated

7/15/2021

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