PMC9167117_01
Urine appearance. (a) Reddish urine of the patient suffering acute porphyria attack. (b) Dark brown urine after one-hour exposure to sunlight.
BMRI2022-9096999.001.jpg
PMC9167117_01_BMRI2022-9096999.001.jpg
fig1
The urine turned a dark brown color after one hour of exposure to sunlight (Figure 1).