Input interpretation
![transtubular potassium gradient](../image_source/ad990b01926cac322d4f1eef0fbbf7e7.png)
transtubular potassium gradient
Equation
![TTKG = (U_K S_osm)/(S_K U_osm) | | TTKG | transtubular potassium gradient S_osm | serum osmolality S_K | serum potassium U_osm | urine osmolality U_K | urine potassium](../image_source/3729cc6f702b50a877e4c3e15bd0e68f.png)
TTKG = (U_K S_osm)/(S_K U_osm) | | TTKG | transtubular potassium gradient S_osm | serum osmolality S_K | serum potassium U_osm | urine osmolality U_K | urine potassium
Input values
![serum osmolality | 278 mOsm/kg (milliosmoles per kilogram) serum potassium | 4 mmol/L (millimoles per liter) urine osmolality | 500 mOsm/kg (milliosmoles per kilogram) urine potassium | 75 mmol/L (millimoles per liter)](../image_source/13177697e0bcb38ed4f625daabb27d30.png)
serum osmolality | 278 mOsm/kg (milliosmoles per kilogram) serum potassium | 4 mmol/L (millimoles per liter) urine osmolality | 500 mOsm/kg (milliosmoles per kilogram) urine potassium | 75 mmol/L (millimoles per liter)
Result
![transtubular potassium gradient | 10.4%](../image_source/37cf848037c9f3eb78bc3a9e1b345ea6.png)
transtubular potassium gradient | 10.4%