Test directory: Oxalate, Quant., 24Hr Urine

Ordering Code307
Test NameOxalate, Quant., 24Hr Urine
AliasOxalic Acid
Preferred SpecimenUrine, 24 Hour
Preferred Container24 Hour Urine Container
Optimum Volume15 mL
Collection InstructionsKeep refrigerated during collection. Record entire 24 Hr
Vol on container & requisition. Patient should refrain from taking excessive amounts of Ascrobic acid, Vitamin C supplements, Vitamin C or Oxalate rich foods (ie: spinach, coffee, tea, chocolate, rhubarb) for at least 48 hours prior to and during the collection. If possible and available, then add 25 mL of 6N HCl prior to collection. If unable to add preservative, then urine MUST be kept refrigerated during collection.
Handling InstructionsSpecimen volume required. If preservative (6N HCl) not added prior to collection, then ADJUST and maintain a pH below 3. Adjust pH within 24 hours of collection.
Transport RequirementsOahu: Refrigerated
Airline: Refrigerated
Specimen StabilityAmbient: 7 Days
Refrigerated: 7 Days
Frozen: 24 Days
Rejection CriteriaSpecimen older than stability limits, Raw specimen not pH'd to < 3 within 24 hours of collection
Avail. StatNO
Analytic Time10 Days
MethodologySpectrophotometry
Reference Lab Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of April 19, 2024.
ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Oxalate, 24HrALLSee report.