Methodology
Spectrophotometry (SP)
Synonyms
Oxalate
Specimen Type
Urine, Random
Performing Lab
Quest Diagnostics San Juan Capistrano
Epic ID
LAB01598
Lab Test Days
Tuesday-Saturday
Standard TAT
1-3 Days
Collection Information
Specimen Required
2-10 mL Random Urine
Container Type
Sterile screw cap container
Collection Instructions
Patient should refrain from taking excessive amounts of Ascorbi Acid or Oxalate-rich foods (i.e., spinach, coffee, tea, chocolate, rhubarb) for at least 48 hours prior to the collection period. Refrigerate after collection.
Processing Information - Lab Use Only
Transport Temperature
Refrigerate-OK/Frozen-OK/Ambient-OK
Specimen Stability
Room Temp: 7 Days; Refrigerated: 7 Days; Frozen: 24 Days
Test Volume Required
10 mL Random Urine
Minimum Test Volume
2 mL Random Urine
Processing Instructions
Please submit 2-10 mL of a well-mixed random collection. Adjust pH to <3.0 with 6N HCl prior to aliquoting for testing. Refrigerate after collection.
Comments
For pediatric patients, order test code 11222-Oxalic Acid, Pediatric Urine w/Creatinine.
CPT Codes
83945, 82570
Revised
8/8/24
Initials
SL