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HelpTest Code LAB1110 Vitamin K1, Serum
Additional Codes
Mayo Test Code: VITK1
Useful For
Assessment of circulating vitamin K1 concentration.
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Specimen Type
SerumSpecimen Required
Patient Preparation: Patient should fast overnight (12-14 hours); infants should have specimen collected before next feeding.
Supplies: Amber Frosted Tube, 5 mL (T915)
Collection Container/Tube:
Preferred: Red top
Acceptable: Serum gel
Submission Container/Tube: Amber vial
Specimen Volume: 2 mL
Collection Instructions:
1. Within 2 hours of collection, centrifuge the specimen.
2. For red top tubes, immediately aliquot serum into an amber vial (preferred). Serum may sit on whole blood cells up to a maximum of two hours before aliquoting.
3. For serum gel tubes, immediately aliquot serum into an amber vial (preferred). Serum may sit on gel at ambient temperature for a maximum of 24 hours or refrigerated for a maximum of 7 days before aliquoting.
Specimen Minimum Volume
0.75 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 30 days |
| Ambient | 30 days | |
| Frozen | 30 days |
Reject Due To
| Gross hemolysis | OK |
| Lipemia | Reject |
| Gross icterus | OK |
Reference Values
<18 years: Not established
≥18 years: 0.10-2.20 ng/mL
Day(s) Performed
Monday through Friday
Report Available
2 to 5 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
84597
Forms
If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.