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HelpTest Code LAB433 Porphyrins, Urine, Fractionated
Acceptable Collection Tube(s) or Specimen
24 hour urine, refrigerate and protect from light during collection.
Processing Instructions
Mix well and send 2.0 mL urine in an amber screw capped plastic vial.
PROTECT FROM LIGHT. Record 24 hour urine volume on test requisition and specimen label.
Stability
Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 30 days
Performed Test Frequency
Tuesday - Saturday
CPT(s)
84120
Performing Location
Quest (Through Warde)
Methodology
High Performance Liquid Chromatography (HPLC)
Specimen Volume
Volume: 2.0 mL
Minimum Volume: 1 mL
Rejection Criteria
Received room temperature, Not protected from light, pH <4.0