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Test Code Epic LAB671 Ascorbic Acid (Vitamin C), Plasma

Additional Codes

SQ code VITCM

Mayo code VITC

Reporting Name

Ascorbic Acid, P

Specimen Type

Plasma Heparin

Performing 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: 12 hours, required; infants should have specimen collected before next feeding

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

42362

Method Description

Samples are diluted and extracted online extraction by high-turbulence liquid chromatography, with detection by tandem mass spectrometry.(Unpublished Mayo Method)

Report Available

3 to 5 days

Forms

If not ordering electronically, complete, print, and send General Request (T239) with the specimen.