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 - Thursday
Analytic Time
2 - 5 days
Soft Order Code
VITK
MiChart Code
Vitamin K (Sendout)
Synonyms
- VITK
- Vitamin K1 Level
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, aliquot serum into a plastic vial and refrigerate.
Special Handling
Fasting specimen.
Normal Volume
2 mL serum
Minimum Volume
0.75 mL serum
Additional Information
Test sent to Mayo Medical Laboratories.
Billing
CPT Code
84597
Fee Code
37992