This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Lithium levels → normal therapeutic - 
Select and explain. 
A. 0.5 to 0.7 mEq/lit, B. 0.7 to 1.1 mEq/lit, C. 0.1 to 0.3 mEq/lit, D. 1.5 to 2mEq/lit
B: 0.7 to 1.1 mEq/lit
Answer: B: 0.7 to 1.1 mEq/lit 
Explanation: Blood lithium levels -


Therapeutic level - 0.8-1.2 mEq/L

(For t/t of acute mania)

Prophylactic level - 0.5-0.8 mEq/L

(For relapse prevention in bipolar disorder)

Toxic lithium levels > 2.0 mEq/L