Lithium is almost entirely excreted by the kidneys. It is contraindicated in patients with acute renal failure (Correct choice-C). A is incorrect because lithium may be conservatively dosed in patients with stable renal insufficiency, with frequent monitoring of levels. D is incorrect because lithium is completely dialyzed and therefore should be given as a single oral dose (300–600mg) following hemodialysis treatment. B is incorrect as lithium levels should not be checked until at least 2–3 hours after dialysis because re-equilibration from tissue stores occurs in the immediate postdialysis period. E is incorrect because lithium is removed by dialysis.

Publication reference : Textbook of Psychosomatic Medicine and C-L Psychiatry, Third Edition. Chapter 20 Renal Disease p582