Cyclosporine Level (Trough)

Therapeutic Drug Monitoring

Normal Reference Ranges

Adult

100 - 400 (Target dependent on organ/time post-transplant) ng/mL

Pediatric

Same as adult ng/mL

Clinical Significance

Monitors immunosuppressive therapy. High levels cause nephrotoxicity, hypertension, hirsutism, and gingival hyperplasia.

Causes of High

  • Cyclosporine toxicity
  • Drug interactions

Causes of Low

  • Subtherapeutic dosing
  • Non-compliance