• Analysis of total and fractionated porphyrins from urine and plasma samples by high performance liquid chromatography (HPLC) method.
• Analysis of -aminolevulinic acid (ALA) and porphobilinogen (PBG) from urine samples by spectrophotometer.
• When needed for differential diagnosis of types of porphyria, fecal porphyrin analysis by HPLC-FL and plasma-fluorescence emission scan.

(Literature: Elisabeth Irene Minder, Xiaoye Schneider-Yin. Porphyrins, Porphobilinogen and -Aminolevulinic Acid)