Porphyrins - Urine Test | Austin Pathology

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Porphyrins - Urine

Alternate Names	PBG screen, Urine PBG, urine porphobilinogen, acute porphyria screening (urine)
Ordering Information	Screening test for acute porphyria.
Laboratory	Referred Test
Specimen	Urine
Container	See collection instructions
Collection Instructions	Send to the laboratory immediately Collect at room temperature Protect from light - wrap in foil
Additional Collection Instructions	Specimen may be either a full container of fresh urine (50 mL), or an aliquot of a 24 hour urine collection, no preservatives.
Minimum Adult Volume	50mL
Minimum Paediatric Volume	None
Notes	Urinary Porphyrins - Porphobilinogen (PBG) Screen: A negative screen has been shown to correlate with porphobilinogen levels less than 10 µmol/L. Urinary Uroporphyrin and Coproporphyrin: Uroporphyrin and coproporphyrin levels in urine are usually calculated only when the total level is > 300 nmol/L.
Frequency	Weekly
Reference Interval	This is a referred test. Please consult reference interval supplied with result.

These PDF documents can be downloaded for your reference

Order of Draw (PDF)

Swab Collection Guide (PDF)

Pre-Transfusion Specimen Requirements (PDF)

Requirements for Pathology Service (PDF)

Test Code	UPOR
Container ID	POT, U
Storage Instructions	Store at 4°C
Transport Instructions	Transport at 4°C
Additional Transport Instruction	Instructions for: Regional Specimen Receptions Forward samples to Heidelberg at 4°C Ensuring the pot is foil-wrapped thoroughly to protect from light.
Laboratory Notes	Instructions for: Metropolitan & Regional Specimen Receptions Ensure sample is foil-wrapped. If foil is tearing or breaking open, apply more to protect sample from light. Place sample in 4°C sendaway tub. Instructions for: Heidelberg Sendaways Department Forward samples to referral laboratory at 4°C.
External Laboratory	Biochemistry, Melbourne Health Shared Pathology Service