Description
Why It’s Done:
This test is used to:
• Monitor lithium levels to ensure they are within the therapeutic range.
• Prevent lithium toxicity, which can cause serious side effects.
• Assess treatment compliance and effectiveness in individuals taking lithium for bipolar disorder or other psychiatric conditions.
• Investigate symptoms of toxicity, such as:
o Nausea and vomiting
o Tremors
o Confusion
o Muscle weakness
o Poor coordination
o Seizures (in severe cases)
Preparation:
• Timing is critical: Blood should be drawn 12 hours after the last dose of lithium unless instructed otherwise by your healthcare provider.
• Do not skip or adjust your dose without medical advice.
• Inform your doctor and lab technician about:
o The exact time of your last lithium dose.
o Any other medications you are taking, as some can affect lithium levels (e.g., diuretics, NSAIDs, ACE inhibitors).
• No fasting is required.
