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Homogeneous Enzyme Immunoassay
Monitor therapeutic drug level
Therapeutic: Peak: 5 - 10 mcg/mL; Trough: < 2 mcg/mL.
Critical: Peak/Random values: >10.5 mcg/mL; Trough values: >2.6 mcg/mL.
Collect blood in an SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate. For maximum clinical significance, usual sampling times are Peak: 0.5 to 1 hour after the end of a 30 minute I.V. infusion (one hour following I.M. administration) or Trough: immediately before next dose is given. Indicate whether specimen is Peak, Trough, or Random level.