Test Catalog
Vitamin C
  • CPT Code: 82180
  • LOINC: 1903-4
  • Specimen Type: Green Heparin tube, PROTECT FROM LIGHT
  • Frequency: Setup: Mon-Fri; analytic time 2 days
  • Instructions: 1.0mL plasma from green top following overnight (12-14hr) fast. Keep on ice and freeze plasma in amber vial to protect from light. Min 0.5mL.
  • Text: Useful in diagnosing vitamin C deficiency and as an aid to deter excessive intake. After consuming vitamin C, plasma values rapidly rise within 1-2 hrs and reach peak concentration within 3-7 hrs post ingestion.
  • Methodology: Liquid Chromatography-Tandem Mass Spectormetry (LC-MS/MS)