Using phenothiazines to detect micro amounts of blood in urine.
D006801:Humans; D007202:Indicators and Reagents; D007674:Kidney Diseases / Q000175:diagnosis; D009780:Occult Blood; D010640:Phenothiazines; D014556:Urine
D007202:Indicators and Reagents; D010640:Phenothiazines