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Vitamin C (Ascorbic Acid), Plasma
0080380
Ordering Recommendation

Use for nutritional assessment of vitamin C.

Mnemonic
VIT C
Methodology
Quantitative High Performance Liquid Chromatography
Performed
Sun, Tue-Thu, Sat
Reported
1-6 days
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
 
Collect
Green (sodium or lithium heparin). Place specimen in ice bath immediately. Also acceptable: Plasma separator tube. 
Specimen Preparation
Protect from light, centrifuge, transfer plasma and freeze within 1 hour of collection. Transfer 0.5 mL plasma to an ARUP Amber Transport Tube. (Min: 0.3 mL) 
Storage/Transport Temperature
CRITICAL FROZEN AND LIGHT PROTECTED. Separate specimens must be submitted when multiple tests are ordered 
Unacceptable Conditions
EDTA plasma, whole blood, or body fluids. Grossly hemolyzed specimens. 
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 
Reference Interval
23-114 µmol/L
Interpretive Data
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 stores.

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 concentration.
CPT Code(s)
82180
Components
Component Test Code*Component Chart NameLOINC
0080380Vitamin C, Plasma1903-4
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Ascorbate