Test Name: Lithium
Formal Name: Serum Lithium
Other Names: Lithium Test, Lithium
Therapeutic: 0.6-1.2 mEq/L (varies by lab). Toxic: >1.5 mEq/L.
Why Test: To monitor medication levels in patients with bipolar disorder.
When to Test: Taking Lithium carbonate (Lithobid or Eskalith) or monitoring levels.
Test Principle: Ion-Selective Electrode (ISE) or Flame Photometry.
Q1: Does salt intake affect it? A1: Dehydration can increase lithium concentration. Q2: Can I miss a dose? A1: Yes, take it as soon as you remember, but do not double up.
