Specimen Requirements
Title
PORPHYRINS, FRACTIONATION/QUANTITATION, URINE
Specimen Requirement
Collect 24 hour urine. Refrigerate and protect from light during collection. Mix well and send 2.0 mL minimum of urine in an amber screw-capped plastic vial.
Protect from light–Record 24 hour urine volume on test requisition and specimen label.
Methodology
Stability
Room Temperature Unacceptable, Refrigerated 4 days, Frozen 1 month
Reference Range
By Report*
Turnaround
5-7 days Performed Mon-Fri
Clinical Use
Evaluate porphyrias, including those involving deficiencies of enzymes which are needed for heme synthesis and chemical porphyrias.
Test Code
UPSR