Transtubular Potassium Gradient (TTKG)
Renal & Urology specialty tool
Bedside Tool Interface Configuration
Measures the concentration gradient of potassium in the distal tubule to estimate aldosterone action.
Algorithm Checklist Parameters:
- Serum Potassium (mEq/L)
- Urine Potassium (mEq/L)
- Serum Osmolality (mOsm/kg)
- Urine Osmolality (mOsm/kg)
- Urine Sodium (mEq/L)
Primary Clinical Application:
Helps evaluate hyperkalemia or hypokalemia to rule out isolated aldosterone defects.