- Urinary d-aminolevulinic acid (ALA)
- Urinary porphobilinogen (PBG)
- Urinary total porphyrins
- Total Faecal porphyrins
- HPLC fractionation of individual porphyrins and isomers in urine and faeces
- Plasma fluorescence emission scan
- Porphyrin Genetics
- Plasma Porphyrin
- Erythrocyte protoporphyrin
- Erythrocyte free protoporphyrin*
- Erythrocyte zinc protoporphyrin*
- Erythrocyte hydroxymethylbilane synthase (HMBS, PBG-deaminase)