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24818 Vitamin K1, Serum (VITK1)

Vitamin K1, Serum (VITK1)
Test Code: VK1SO
Synonyms/Keywords
​Ref Lab Code: 57320, Vitamin K, Vitamin K1,
Phylloquinone
Useful For
Assessment of circulating vitamin K1 concentration
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
Yes (12-14 hours)​ ​Serum ​Red Top Tube (RTT) 2 mL​ ​0.75 mL ​
Collection Processing Instructions

Fasting-overnight (12-14 hours) (infants-draw prior to next feeding).

Serum: Draw blood in a plain, red-top tube(s). Spin down and send 2 mL of serum in amber vial to protect from light.

Note: 1. Protect from light within 1 hour of collection.
         2. Patient must be fasting overnight (12 -14  hours).
         3. Patient must not consume any alcohol for 24 hours prior to draw.
Specimen Stability Information
Specimen Type Temperature Time
​Serum ​ ​Refrigerate (preferred) ​14 days
​Ambient ​14 days
​Frozen ​14 days
Rejection Criteria
​Lipemia Mild reject, Gross reject
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Mayo Medical Laboratories​ Monday through Friday​ ​2-6 days
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Reference Lab
Mayo Clinic Laboratories
Reference Range Information
> or =18 years: 0.10-2.20 ng/mL
<18 years: not established
Interpretation
Low vitamin K1 concentrations in the serum are indicative of insufficiency and poor vitamin K1 status.
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
​84597 ​ ​ ​ ​
Synonyms/Keywords
​Ref Lab Code: 57320, Vitamin K, Vitamin K1,
Phylloquinone
Ordering Applications
Ordering Application Description
​Centricity ​Vit. K1 (VITK1)
​Cerner ​Vitamin K1 (91226)
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
Yes (12-14 hours)​ ​Serum ​Red Top Tube (RTT) 2 mL​ ​0.75 mL ​
Collection Processing

Fasting-overnight (12-14 hours) (infants-draw prior to next feeding).

Serum: Draw blood in a plain, red-top tube(s). Spin down and send 2 mL of serum in amber vial to protect from light.

Note: 1. Protect from light within 1 hour of collection.
         2. Patient must be fasting overnight (12 -14  hours).
         3. Patient must not consume any alcohol for 24 hours prior to draw.
Specimen Stability Information
Specimen Type Temperature Time
​Serum ​ ​Refrigerate (preferred) ​14 days
​Ambient ​14 days
​Frozen ​14 days
Rejection Criteria
​Lipemia Mild reject, Gross reject
Useful For
Assessment of circulating vitamin K1 concentration
Reference Range Information
> or =18 years: 0.10-2.20 ng/mL
<18 years: not established
Interpretation
Low vitamin K1 concentrations in the serum are indicative of insufficiency and poor vitamin K1 status.
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Mayo Medical Laboratories​ Monday through Friday​ ​2-6 days
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Reference Lab
Mayo Clinic Laboratories
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
​84597 ​ ​ ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.