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HelpTest Code VITC Ascorbic Acid (Vitamin C), Plasma
Useful For
Identifying vitamin C deficiency
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Portions of this test are covered by patents held by Quest Diagnostics
Reporting Name
Ascorbic Acid, PSpecimen Type
Plasma HeparinShipping Instructions
Ship specimen frozen on dry ice in amber vial to protect from light.
Specimen Required
Patient Preparation: Fasting overnight (12-14 hours) (infants-collect prior to next feeding). Water can be taken as needed.
Supplies: Amber Frosted Tube, 5 mL (T915)
Collection Container/Tube:
Preferred: Green top (sodium or lithium heparin)
Submission Container/Tube: Amber vial
Specimen Volume: 1 mL
Collection Instructions:
1. Immediately place specimen on wet ice and process within 4 hours of collection.
2. Centrifuge at 4° C, aliquot plasma into amber vial to protect from light.
3. Freeze plasma immediately, ideally at or below -60° C, protected from light.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Plasma Heparin | Frozen | 14 days | LIGHT PROTECTED |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
| Gross icterus | OK |
Reference Values
0.4-2.0 mg/dL
Day(s) Performed
Monday through Friday
Report Available
3 to 5 daysTest Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
82180
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| VITC | Ascorbic Acid, P | 1903-4 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 8312 | Ascorbic Acid, P | 1903-4 |