Investigation Name:Porphyria Testing

Alias or Abbreviation:Porphyrin

Pathology Laboratory:Clinical Chemistry/ Biochemistry

Requestable Seperately?No

Part of Profile:Yes

Tests in Profile:Urine PBG/Cre and urine porphyrin/cre

Minimum Sample Volume:3 mL

Expected Turnaround Time:15 working days

Test Code:APS

Sample Type:

Complex Reference Range:Urine PBG/Cre <1.5 umol/mmol
Urine porphyrin/Cre <35 nmol/mmol
If patient <16 years profile includes ALA/Cre <5.2umol/mmol
If PBG/Cre or porpyrin/Cre is raised urine and EDTA blood is referred for analysis.

Collection Conditions / Other Information:Random urine in white top universal AND EDTA blood (purple top)
PROTECT SAMPLES FROM LIGHT. Please note: urine PBG, whilst independently verified in the laboratory for use, is currently outside of the scope of our UKAS accreditation.
If urgent please contact lab on ext 8266. LAB INFORMATION: If sample arrives unprotected from light but was collected <6hrs ago, protect from light, add comment in winpath and write ‘exposure to light (<6hrs) has occurred’ on request form sent to Cardiff.
If sample arrives unprotected from light and was collected >6hrs ago, sample cannot be analysed – reject samples and request repeat. Please pass on to BMS immediately.

Reference Laboratory Details:Dept of Medical Biochemistry, University Hospital of Wales, Heath Park, Cardiff, CF14 4XW. (Tel: 029 2074 3565)

Referred to Another Laboratory?Yes

Contact Number:01902 307 999 Ext 88266