... diabetes, metabolic abnormalities, liver diseases, kidney function, and urinary tract infections. Test results can be used along with other ... ), Specific Gravity, Blood, pH, Protein, Urobilinogen, Nitrite and Leukocytes in Urine.Test PriniciplesUrobilinogen: this test is based on the Ehrlich ... of-indicators principle. An ion in the specific pH indicator attracted by cation on the protein molecule makes ...