Table 4 Calculation of transtubular gradient
Urine sodium, 59 mM/l | Transtubular gradient |
|---|---|
Urine potassium, 38 mM/l | Urine K/plasma K |
Urine osmolality, 405 mOsm/kg | Urine osmolality/plasma osmolality |
Plasma potassium, 5.1 mM/l | Â |
Plasma osmolality, 288 mOsm/kg | Patient's transtubular gradient = 5.3 |