What is the therapeutic blood level range for lithium?

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Multiple Choice

What is the therapeutic blood level range for lithium?

Lithium works best when its blood level sits in a narrow window: low enough to avoid toxicity but high enough to control mood symptoms. The commonly used therapeutic range is about 0.5 to 1.5 mEq/L. This span covers both maintenance and acute treatment needs. Levels below about 0.5 are often not effective, while levels above about 1.5 begin increasing the risk of toxicity, with more severe concerns as the level climbs toward 2.0 and higher. Because lithium is renally excreted and sensitive to hydration and salt balance, clinicians monitor blood levels regularly after starting or adjusting therapy to stay within this range.

Lithium works best when its blood level sits in a narrow window: low enough to avoid toxicity but high enough to control mood symptoms. The commonly used therapeutic range is about 0.5 to 1.5 mEq/L. This span covers both maintenance and acute treatment needs. Levels below about 0.5 are often not effective, while levels above about 1.5 begin increasing the risk of toxicity, with more severe concerns as the level climbs toward 2.0 and higher. Because lithium is renally excreted and sensitive to hydration and salt balance, clinicians monitor blood levels regularly after starting or adjusting therapy to stay within this range.

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