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Test & Collection Guide

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Porphyrin Studies

Laboratory:
Referred Test
Test Code:
PORB,PORPHP,PORF,PORU
Specimen types:
Blood
Faeces
Urine
Container types:
Lithium heparin no gel
Sterile Jar
Faeces- M&C and parasites
Lithium heparin no gel
Collection Instructions:

Blood - whole blood EDTA tube, plus whole blood Lithium heparin tube (no gel)

Faeces - about 10 g of a fresh random faecal specimen

Urine - 50 mL fresh, early-morning, random urine specimen

Protect all samples from light and send samples immediately to the laboratory.

Notes:

 

Investigation of porphyrias may require a variable combination of assays, including urinary (porphyrins, PBG and ALA), blood and faecal porphyrins

Adequate clinical comments, plus requests and samples for urine PBG and porphyrins should be supplied

When abnormal concentrations of porphyrins are found, individual porphyrins will be identified and quantitated

 

Frequency:
Fortnightly
Result Turnaround Time:
3-4 weeks
Reference Interval:

 

Red blood cell <1.8 umol/L, Plasma <10 nmol/L  
Faeces < 200 umol/Kg  
Urine <300 nmol/L  
Laboratory Use Only
External Laboratory:
Royal Melbourne Hospital
 External Laboratory details...