Potassium is excreted by the kidney into the urine under the control of aldosterone. Urine potassium is measured as part of the urine U&Es panel. Clinical indications for requesting this test include the investigation of hypokalaemia, hyperkalaemia, states of hypoaldosteronism or hyperaldosteronism, and type 4 renal tubular acidosis. A measurement of urine potassium concentration is required to calculate the trans-tubular potassium gradient (TTKG).
Tube
08 (UR) – Urine
ID
Tests&Tubes0096
Turn around
A&E: N/A
Day Case: N/A
In-Patient: 6 Hours
Out-Patient: 24 Hours
GP: N/A
Send to
Blood Sciences Cross Site
Contact
For further details please contact Leeds Pathology customer services: [email protected].
Collection Con
Minimum volume: 500µl urine
Instructions for Lab Staff: Standard lab processing- No special requirements.
Sample REQ
Urine
Ref. Range Notes
Units
mmol/L