Vitamin C (Ascorbic Acid), Plasma
0080380
 
Ordering Recommendation
Mnemonic
VIT C
Methodology
Quantitative High Performance Liquid Chromatography
Performed
Sun-Sat
Reported
1-7 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Fasting specimen preferred.  
Collect
Green (sodium or lithium heparin). Place specimen in ice bath immediately. Also acceptable: Plasma separator tube.  
Specimen Preparation
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
Body fluids other than frozen, light-protected, heparinized plasma. Grossly hemolyzed plasma. Non-frozen specimens. Blood collection tube types other than green (sodium or lithium heparin) and plasma separator tube.  
Remarks
Thawing and refreezing of the specimen and exposure to light will result in decreased Vitamin C concentration.  
Stability
Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen and light protected: 1 month  
Reference Interval
23-114µmol/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
CPT Code(s)
82180
Components
Component Test Code*Component Chart Name
0080380Vitamin C, Plasma
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
  • Ascorbate