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Vitamin C

Lab Section:  Sendout Reference  
Lab Location:  Sendout
Reference Lab: Quest 
Test ID: LAB671 
Synonyms: Ascorbic acid
Methodology: Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Schedule: Tuesday-Saturday
Reported: 10 days
Specimen Requirements:  Collection: 2.0 mL Blood in a Red Top Tube.
Pediatric volume: 1 mL.
Collect blood in a light-protected, red-top evacuated tube. Allow blood to clot refrigerated. Centrifuge refrigerated at (2200-2500 rpm, 800-1000 g) for 8-10 min. Transfer serum to polypropylene transport tubes (protect from light) and place them immediately under dry ice or ultra-low freezer (-60 C to -90 C).


Samples must be light protected (using amber tubes or foil) and shipped frozen on dry ice.
Transport: Frozen.
Handling: Overnight fasting is preferred. Refrain from eating fuits and from taking Vitamin C supplements 24 hours prior collection.
Unacceptable conditions: Hemolysis Lipemic Thawed specimens Received room temperature Received refrigerated Not light protected EDTA plasma Lithium heparin plasma
Stability: Room temperature: Unacceptable Refrigerated: Unacceptable Frozen -70C: 35 days

Notes: 

Clinical Indications: Vitamin C is an antioxidant involved in connective tissue metabolism, drug-metabolizing systems, and mixed-function oxidase systems to list a few. Vitamin C deficiency causes scurvy; manifestations include impaired formation of mature connective tissue, bleeding into the skin, weakness, fatigue, and depression.

Performing laboratory: Quest Diagnostics Nichols Inst San Juan Capistrano 33608 Ortega Highway San Juan Capistrano, CA 92690-6130

Reference Interval:  See patient report or consult reference laboratory website.
CPT Code(s): 82180
Last Changed: 12/16/2016 14:12:13
Last Reviewed: 12/27/2016 03:10:10