LITHIUM

What this test checks

Measures lithium in your blood. The safe range is narrow — too little doesn't work, too much is toxic.

Why do people get this test?

Routine monitoring while on lithium for bipolar disorder or related conditions.

When you should consider this test

• Currently on lithium
• Symptoms of toxicity (tremor, confusion)
• Dose adjustment

How to prepare

Sample 12 hours after your last dose, usually morning before next dose.