Ordering Recommendation

Use for nutritional assessment of vitamin K1.

Mnemonic
VIT K
Methodology

Quantitative High Performance Liquid Chromatography

Performed

Sun-Fri

Reported

2-5 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation

Patient should fast overnight for 12 hours and should not consume alcohol for 24 hours prior to blood draw.

Collect

Plain red or serum separator tube. Also acceptable: Lavender (EDTA) or pink (K2EDTA).

Specimen Preparation

Protect from light during collection, storage, and shipment. Separate serum or plasma from cells within 1 hour of collection. Transfer 1 mL serum or plasma to an ARUP Amber Transport Tube. (Min: 0.6 mL)

Storage/Transport Temperature

Frozen. Separate specimens must be submitted when multiple tests are ordered.

Unacceptable Conditions

Any specimen other than serum or EDTA plasma. Hemolyzed specimens.

Remarks
Stability

After separation from cells: Ambient: Unacceptable; Refrigerated: 1 month; Frozen: 6 months

Reference Interval

0.22-4.88 nmol/L

Interpretive Data

Vitamin K concentration is reported as nanomoles per liter (nmol/L). To convert concentration to nanograms per milliliter (ng/mL), multiply the result by 0.45.

Compliance Category

Laboratory Developed Test (LDT)

Note
Hotline History
N/A
CPT Codes

84597

Components
Component Test Code* Component Chart Name LOINC
0099225 Vitamin K1 9622-2
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • K1, Vitamin
  • Phylloquinone
  • phytonadione
Vitamin K1, Serum