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HelpTest Code VITK1 Vitamin K1, Serum
Secondary ID
42364Method 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.
Offsite Ordering Instruction:
Protect from light
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
CPT Code Information
84597
Forms
If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.