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Vitamin K

Item Value
Approval req'd? No
Available Stat? No
Test code VITK
Performed by Quest
Sendout? Yes
Method HPLC
Patient Preparation Overnight fast preferred.
Collection Instructions Wrap sample tube in aluminum foil to protect from light.
Container type Dark Green top (Light. green acceptable)
Amount to Collect 8 mL blood
Sample type Heparinized plasma
Preferred volume 4 mL plasma
Min. Volume 2 mL plasma
Processing notes Separate and freeze plasma at -20C in dark plastic transport tube or wrapped with aluminum foil. Ship frozen to China Basin. Order Quest # 36585X
Ref Lab Rejection Criteria Thawed or refrigerated sample.
Units pg/mL
Normal range 80-1160 pg/mL
Stability Room temperature unacceptable, refrigerated unacceptable, frozen at -20C 3 months
Additional information Vitamin K is a required co-factor for the synthesis of factors 2, 7, 9, and 10 and proteins C and S. Deficienceies of Vitamin K lead to bleeding. Warfarin acts as ananticoagulant because it is a Vitamin K antagonist.
LOINC code 3129-4
Last Updated 10/2/2010 11:52:56 AM
Entry Number 1093
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