<prompt> In acute mania, the therapeutic serum level of lithium includes0.2-0.5 mEq L0.8-1.5mEqL1-2 mEqL2-5 mEq L  <response>: B 0.8-1.5 mEq L Blood Lithium levels: Therapeutic levels 0.8-1.2 mEqL For treatment of acute mania Prophylactic levels 0.6-1.2 mEqL For relapse prevention in bipolar disorders Toxic Lithium Levels 2.0 mEqL 