Accreditation
Cardiff Porphyria Service is a CPA accredited laboratory. For more information please refer to the CPA website where you will find us as part of Cardiff University Health Board, Department of Medical Biochemistry and Immunology. Our CPA reference number is 0841.
Internal Quality Control
| Analyte | Level 1 | %CV | Level II | %CV |
| Total urine porphyrin (1) | 182 nmol/l | 11.30 | 1111nmol/l | 9.25 |
| Total faecal porphyrin (2) | 57 nmol/g dry wt | 7.97 | 630 nmol/g dry wt | 10.08 |
| Urine porphobilinogen (1) | 3.5 umol/l | 14.40 | 55.5 umol/l | 8.16 |
| Urine aminolevulinic acid (1) | 30.0 umol/l | 8.48 | 142.0 umol/l | 8.40 |
| RBC protoporphyrin (2) | 0.72 umol/l | 11.00 | 32.83 umol/l | 8.65 |
| Plasma total porphyrin (2) | 5.4 nmol/l | 11.99 | 599.2 nmol/l | 11.71 |
(1) Recipe ClinChek® lyophilised urine control
(2) In house control material
External Quality Assurance
The Cardiff Porphyria Service participates in the EpNet Porphyria external quality assessment scheme and the Royal College of Australian Pathologists quality assurance programme. Our performance is within assigned limits and we have correctly identified all porphyria cases.
