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|Patient Preparation||An 8 hour fast before specimen collection is preferred.|
|Collection Instructions||Wrap collection tube in aluminum foil to protect from light.|
|Container type||Gold top|
|Amount to Collect||4 mL blood|
|Preferred volume||2 mL serum|
|Min. Volume||0.6 mL serum|
|Processing notes||Freeze serum at -20C in dark pour-off vial. Order Quest # 5009N|
|Synonyms||Vitamin E; Alpha Tocopherol|
|Turn around times||Test run Monday-Friday. Turnaround time: 2-4 days.|
|Additional information||To convert mg/L to µmol/L (SI units) multiply by 2.32.
This assay measures alpha- (the main source of activity) and combined beta- and gamma-tocopherols. The bioavailability of Vitamin E may be impaired in hyperlipidemic states, in which it may be useful to simultaneously measure Cholesterol, Total or Lipids, Total. The Vitamin E/lipid ratios calculated as (100 x Vitamin E [in mg/L])/(lipid [in mg/dL]) are normally > 3 mg/g for E/cholesterol or > 1 mg/g for E/total lipids.
|Last Updated||10/2/2010 11:52:41 AM|