Physiology In the formula for urea clearance, C = U x V/P, what does U stands for: A Urinary concentration in g/24 hour B Urinary concentration in mg/ml C Urine osmolarity D Urine volume per minute 💡 Explanation In the formula for urea clearance, C = U x V/P, what does U stands for: ✓ Correct Answer: B. Urinary concentration in mg/ml