- Diff Dx: - False Pos: - Anticoagulation - Myoglobinuria - Bleeding diathesis - Hemoglobinuria - Entero-vesical fistula - Porphyria - HbS - GU neoplasm - Vigorous Exercise - Polycystic kidney - Renal Infarction - Trauma - Renal Vein Thrombosis - Infection - Transfusion RXN - Stones - Burns; - Prostatic hypertophy - Intersitial Nephritis - Glomerulonephritis - Hemolytic Anemia - Discussion: - If DipStick is Positive for Blood, but no Cells: - Free Hemoglobin from Trauma - Transfusion RXN - Lysis of RBCs (RBC will Lyse if the pH is <5 or >8, - Myoglobin present because of a Crush Injury, Burn, Tissue Ischemia; - only 8.8 % of pts have more than 10 red cells per high-power field; ---------------------------------
Haematuria after blunt trauma: the role of pyelography. 
