Test Overview
Test Methodology

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

Reference Range *

0.10 - 2.20 ng/mL
<18 years: Not established

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

Testing of non-fasting specimens or use of vitamin K1 supplementation can result in elevated serum vitamin K1 concentrations.

Test Details
Days Set Up
Monday - Friday
Analytic Time

2 - 5 days

Soft Order Code
VITK
MiChart Code
Vitamin K (Sendout)
Synonyms
    Laboratory
    Sendout
    Reference Laboratory
    Mayo VITK1
    Section
    Special Testing
    Specimen Requirements
    Collection Instructions

    Patient should abstain from alcohol for 24 hours prior to specimen collection. Collect specimen in a red top (preferred) or SST tube from a fasting patient (12-hour fast). Centrifuge within 2 hours of collection, aliquot serum into a plastic vial and refrigerate.

    Special Handling

    Fasting specimen.

    Normal Volume
    2 mL serum
    Minimum Volume
    0.75 mL serum
    Storage Temperature
    Refrigerated preferred, ambient or frozen are acceptable
    Additional Information

    Test sent to Mayo Medical Laboratories.

    Billing
    CPT Code
    84597
    Fee Code
    37992
    NY State Approved
    No