Lithium concentration in serum/plasma

Why This Test Is Done

Your healthcare provider may order a lithium test if you’re taking lithium-based medications, such as lithium carbonate or lithium citrate, to treat conditions like bipolar disorder or severe depression. They may also check it if you have symptoms like confusion, nausea, or unusual thirst, which could indicate lithium levels are too high or too low.

What to Expect Before the Test

No special preparation is needed for this test. You’ll have a small needle inserted into your arm or vein to draw a blood sample. The process is quick and usually painless. If you’re on lithium, your provider may ask you to stop taking it temporarily before the test, so let your doctor know if you’re unsure.

What the Test Results Mean

Lithium levels are checked to ensure they’re within the target range for your treatment. Too much lithium can cause side effects like vomiting, tremors, or kidney problems, while too little may mean your medication isn’t working effectively. Your results will be discussed with your healthcare provider, who will adjust your dose if needed.

Common Side Effects of Lithium

Lithium can cause mild side effects like nausea, dizziness, or increased thirst. If you experience severe symptoms like seizures, irregular heartbeat, or signs of kidney problems (e.g., swelling, changes in urine), seek medical attention immediately.