... Specific Gravity, Blood, pH, Protein, Urobilinogen, Nitrite, Leukocytes, Ascorbic Acid Urine Reagent Strips (URS) for Urinalysis are firm plastic strips ... Blood, pH, Protein, Urobilinogen, Nitrite, Leukocytes, and Ascorbic Acid in Urine. Test results may provide information regarding the ... status of carbohydrate metabolism, kidney and liver function, acid-base balance, and bacteriurea.1,2 Please refer ...