Explanation • A urinalysis that is positive for blood does n | NEET PG/NEXT (MCQs)

Explanation

• A urinalysis that is positive for blood does not distinguish between myoglobin and hemoglobin. A microscopic urine exam is necessary for definitive diagnosis.
• In a patient with myoglobinuria, a microscopic evaluation will fail to show the presence of RBC casts or intact RBCs.
• Gross myoglobinuria can lead to an abnormal coloration of the urine and is typically described as ‘Cola colored’.
• Hematuria and renal cell carcinoma would be expected to produce urine analysis and microscopic exam that are positive for RBCs, whereas nephritic syndrome would be expected to have RBC casts.