Vitamin K1, Serum
Ordering Recommendation

Use for nutritional assessment of vitamin K1.

Quantitative High Performance Liquid Chromatography
2-5 days
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
Patient should fast overnight for 12 hours and should not consume alcohol for 24 hours prior to blood draw. 
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. 
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.

Statement B: Compliance Statement B: For laboratory developed tests not using a RUO kit, and for FDA approved, cleared or 510(k) exempt assays with alterations. This test was developed and its performance characteristics determined by ARUP Laboratories. The U. S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.

Hotline History
Component Test Code*Component Chart NameLOINC
0099225Vitamin K19622-2
* 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 view this test within the Laboratory Test Directory found at
  • K1, Vitamin
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