Container/Tube: Plastic Urine Container, leak-proof or Monovette® with pH stabilizer Specimen: 10 mL random urine (2.5 ml min) Transport temperature: Room Temperature if in Monovette® Stability: 7 days Room temperature or Refrigerated 14 days Frozen Collection: Collect urine and transfer to a random urine transport tube or urine Monovette® with pH stabilizer. Maintain acidified urine at room temperature. Acid prevents crystallization and conversion of ascorbate (vitamin C) to oxalate.
Patient Preparation: Avoid vitamin C supplements and vitamin C-rich foods (eg, citrus fruits like oranges, orange juice; vegetables like broccoli, tomatoes, peppers, potatoes) for 48 hours prior to collection.
Transport Instructions
Room Temperature if in Monovette®
Specimen Stability
7 days Room temperature or Refrigerated 14 days Frozen Collection: Collect urine and transfer to a random urine transport tube or urine Monovette® with pH stabilizer. Maintain acidified urine
