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Test ID BLOD0219 Vitamin K1, Serum

Important Note

Effective 3/31/2025:  Due to assay issues affecting VITK1, results will be delayed past the published turnaround time. Specimens will be stabilized upon arrival and processed in the order they are received. Specimens may take up to 10 days to result and the duration of the delay is expected to last up to 30 days or more. An update will be provided when standard testing resumes.

Useful For

Assessing circulating vitamin K1 concentration

Specimen Type

Serum


Specimen Required


Patient Preparation: Fasting overnight (12-14 hours) (infants-collect prior to next feeding).

Supplies: Sarstedt Aliquot Tube 5 mL (T914)

Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 2 mL

Collection Instructions: Within 2 hours of collection, centrifuge and aliquot serum into a plastic vial.


Specimen Minimum Volume

0.75 mL

Reject Due To

Gross hemolysis OK
Gross lipemia Reject
Gross icterus OK

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 30 days
  Ambient  30 days
  Frozen  30 days

Day(s) Performed

Monday through Friday

Report Available

2 to 5 days

Method Name

Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

84597

Secondary ID

42364

Reporting Name

Vitamin K1, S

Reference Values

<18 years: Not established

≥18 years: 0.10-2.20 ng/mL

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.

Forms

If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.

Sanford Laboratories - Fargo Additional Information:

SANFORD INTERFACE BUILD INFORMATION

Result Code Result Code Description
5243 Vitamin K1