Serum or plasma concentration of mycophenolic acid (mass concentration)

Why This Test Is Done

Doctors may order this test if you’re taking mycophenolate mofetil (CellCept®) or mycophenolic acid (Myfortic®) to manage conditions like organ transplants or autoimmune diseases. It helps track whether your medication is at the right level to prevent side effects or treat your condition effectively.

What to Expect Before the Test

No special preparation is needed, but let your doctor know if you’re taking other medications, have recent infections, or are pregnant. Blood is drawn from a vein, usually in your arm, and you may feel a slight pinch.

What the Test Results Mean

Results are compared to a general reference range, but exact values can vary by lab. High levels may indicate too much medicine, while low levels could mean your body isn’t absorbing it well. Your doctor will interpret results in the context of your treatment plan.

Common Reasons for Testing

This test is often done regularly to ensure your mycophenolic acid levels stay within safe ranges. It helps prevent complications like infections or organ damage from either too little or too much medicine.