Lithium and eGFR: a new routinely available tool for the prevention of chronic kidney disease.

The National Strategic Framework for Renal Services introduced the routine reporting of estimated glomerular filtration rates (eGFR) on serum urea and electrolyte tests. Estimated glomerular filtration rates might reduce renal failure induced by lithium and cardiovascular mortality but there are many false positives. We propose how eGFR might be used in lithium monitoring.