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HelpTest Code Epic LAB671 Ascorbic Acid (Vitamin C), Plasma
Additional Codes
SQ code VITCM
Mayo code VITC
Reporting Name
Ascorbic Acid, PSpecimen Type
Plasma HeparinPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Identifying vitamin C deficiency
Shipping 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 |
Reference Values
0.4-2.0 mg/dL
Day(s) Performed
Monday through Friday
Test 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 |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
| Gross icterus | OK |
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Portions of this test are covered by patents held by Quest Diagnostics
Secondary ID
42362Method Description
Samples are diluted and extracted online extraction by high-turbulence liquid chromatography, with detection by tandem mass spectrometry.(Unpublished Mayo Method)