Oxalate, Urine 24 Hr

Centralized Core Laboratory:Chemistry

Test ID/Workstation: OXUR MAYO

Specimen Type: Urine

Tube Type: Urine container

Collection Volume: 24 hour urine collection

Cause for rejection: Specimen collected or sent in container with metal cap will be rejected. Avoid taking larger doses (>2 g orally/24 hours) of vitamin C during specimen collection.

Storage: Refrigerated

Availability: Sent to reference lab

Methodology: Spectrophotometrically

Special Instructions: Refrigerated 4.0 mL (minimum 1.0 mL) aliquot from a well-mixed 24 hour urine collection without preservative. Instruct patient on 24 hour urine collection. To begin the urine collection, have the patient void. DISCARD THIS URINE SPECIMEN. This is best done with the first morning specimen. Note the time and record on the requisition. From then on collect all the urine that is voided and place in container. If more than one container is needed, please mark the first as #1 of 2 and retain on the floor until the collection is complete. The final void should be made 24 hours after the first void described earlier. The specimen should be included with the collection. Refrigerate 24 hour urines during collection. Indicate total 24-hour volume.

Lab/Phone: 330-543-8418

TAT: 3-5 days

CPT Code: 83945

Synonyms: -

Specimen Collection Procedures

Requisition Form
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