Commercial Mail-out Laboratory
|Plasma Separator Tube 4.5 mL
Preferred Minimum: 0.5 mL plasma
Absolute Minimum: 0.3 mL plasma
EDTA plasma, whole blood, or body fluids. Grossly hemolyzed specimens.
Wrap tube in aluminum foil to protect from light. IMMEDIATELY place
tube in ice and delivery to the laboratory.
1-6 days upon receipt at reference laboratory
Vitamin C concentrations lower than 11 μmol/L indicate
deficiency. Concentrations between 11 and 23 μmol/L are
consistent with a moderate risk of deficiency due to inadequate tissue
Vitamin C concentration is reported as micromoles per liter
(μmol/L). To convert concentration to milligrams per deciliter
(mg/dL), multiply the result by 0.0176.
Note: Fasting specimen preferred. Thawing and refreezing of the
specimen and exposure to light will result in decreased Vitamin C
Quantitative High Performance Liquid Chromatography