The effect of phosphate on the ortho-tolidine reagent for detection of blood in faeces.
D005243:Feces / Q000737:chemistry*; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D006470:Hemorrhage; D006801:Humans; D007202:Indicators and Reagents; D010710:Phosphates / Q000737:chemistry*
D007202:Indicators and Reagents; D010710:Phosphates
FECES/chemistry; HEMORRHAGE, GASTROINTESTINAL/diagnosis; PHOSPHATES/chemistry