Urine removal is only required for those types of composting toilets using urine diversion. It can result in incontinence of urine or feces. Their kidneys produce dilute urine for excretion. Urine and feces together are called excreta. The presence of 8-OHdG in blood, urine and saliva is commonly associated with DNA damage. Diagnosis is typically made by blood, urine, and stool tests. Caused by paramyxovirus that is transmitted by infected saliva and urine. Exposure may be verified by testing the urine or blood. These metabolites are excreted in the urine and bile. Healthy animals rapidly excrete excess magnesium in the urine and stool. Porphyria is diagnosed through biochemical analysis of blood, urine, and stool. Elimination occurs mainly via excretion of unmetabolized drug in the urine. Myoglobin released into the blood results in dark urine. It is normally present in blood and urine. Diagnosis is by testing the urine, blood, or hair.