Porphyrins, Quantitative Urine

Centralized Core Laboratory:Chemistry

Test ID/Workstation: PORPU MAYO

Specimen Type: Urine

Tube Type: Urine container

Collection Volume: 24 hour urine collection

Cause for rejection: -

Storage: Frozen

Availability: Sent to reference lab

Methodology: High Performance Liquid Chromatography (HPLC) with Fluorometric Detection

Special Instructions: 50.0 mL urine (minimum 20.0 mL) from a well-mixed 24 hour urine collection. Add 5 g of sodium carbonate as preservative at start of collection. 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 during collection. Protect from light.

OC Power Word: LPORPU

Lab/Phone: 330-543-8418

TAT: 2-6 days

Additional Info: Reference range is available on patient report.

CPT Code: 84120

Synonyms: -

Requisition Form
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