Test Code VITK1 Vitamin K1, Serum
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
Vitamin K1, SUseful For
Assessment of circulating Vitamin K1 concentration
Shipping Instructions
Ship specimen in amber vial or wrapped to protect from light.
Specimen Required
Patient Preparation:
Fasting: 12 hours, required; 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 Serum
Collection Instructions:
1. Within 2 hours of collection, centrifuge the specimen.
2. For red-top tubes:
Preferred: Immediately aliquot serum into an amber or light-protected plastic vial.
Acceptable: Serum may be on whole blood cells a maximum of 2 hours before aliquoting. Protect the collection tube from light.
3. For serum-gel tubes:
Preferred: Immediately aliquot serum into an amber or light-protected plastic vial.
Acceptable: Serum may be aliquoted into an amber or light-protected plastic vial within 24 hours of collection when kept at ambient temperature and protected from light or within 7 days of collection if kept refrigerated and protected from light.
Specimen Minimum Volume
Serum: 0.75 mL
Specimen Type
SerumSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 14 days |
| Frozen | 30 days | |
| Ambient | 24 hours |
Day(s) Performed
Monday through Friday
Reference Values
<18 years: Not established
≥18 years: 0.10-2.20 ng/mL
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
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
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| VITK1 | Vitamin K1, S | 9622-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 62167 | Vitamin K1, S | 9622-2 |
Report Available
2 to 5 daysForms
If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.