Lithium

Lithium is a mood stabilizer commonly prescribed to manage and prevent episodes of mania and depression in individuals with bipolar disorder. It works by affecting the flow of sodium through nerve and muscle cells in the body, influencing mood-regulating neurotransmitters in the brain. However, it is crucial to maintain lithium levels within a specific range in the blood for it to be effective and safe. Too much lithium can lead to toxicity. Too low a lithium level may not effectively manage the symptoms.

The Lithium test is done to check if the amount of lithium in the blood is within the safe and effective range. It helps doctors adjust the dose if it is too low, which can cause symptoms to return. It also helps if it is too high, which can lead to side effects like nausea, confusion, or tremors. Regular testing also helps prevent lithium toxicity and shows if the medication is being taken as prescribed.

It is recommended to collect the blood sample just before the next scheduled dose (typically 10 to 14 hours after the last dose) when lithium reaches a steady level in the body. This timing is referred to as the trough level. Several factors can affect lithium levels, such as when the dose is taken, hydration, kidney function, and other health conditions. Informing the doctor about these ensures accurate test results.

Test result ranges may vary across laboratories. Abnormal test results require expert interpretation. Therefore, self-medicating at home based solely on these results should be avoided. Always consult a doctor for a proper understanding of the test results.