Vitamin C, Plasma VITC

Method(s) Quantitative High Performance Liquid Chromatography
Specimen Required
Collect

One 10 mL green (sodium or lithium heparin) top tube. Place in ice bath immediately. Also acceptable: Plasma separator tube.

Transport

Specimen preparation: Protect from light. Centrifuge, transfer plasma and freeze within 1 hour of collection. Transfer 0.5 mL plasma to amber vial (Min: 0.3 mL). CRITICAL FROZEN AND LIGHT PROTECTED. Separate specimens must be submitted when multiple tests are ordered.

Remarks Thawing and refreezing of the specimen and exposure to light will result in decreased Vitamin C concentration.
Stability

After separation from cells: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 year

Unacceptable Conditions

EDTA plasma, whole blood, body fluids and grossly hemolyzed specimens.

Schedule Sun, Tue-Thu, Sat
Billing Code 5010490
CPTCode 82180
Preferred Specimen Collection Device(s)
Reference Interval

23-114 micromol/L


Interpretive Data:
Vitamin C concentrations lower than 11 micromol/L indicate deficiency. Concentrations between 11 and 23 micromol/L are consistent with a moderate risk for deficiency due to inadequate tissue stores.

No Appointment Necessary
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12 Patient Service Centers in Central New York.

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