<prompt> Which of the following serum concentration of lithium indicates lithium toxicity?2 m EqL4m EqL6 m EqL8 m EqL  <response>: Ans. A 2 mEqLRef: KDT 8e p476; Katzung 12th517Important serum levels of lithiumFor bipolar disorder0.5-0.8 mEqLFor acute mania0.8-1.2 mEqLLithium toxicity 2 mEq LDialysis done if level 4 m EqL 