IV Busulfan AUC and Dose Adjustment (Label Method)

IV busulfan AUC from timed levels and the adjusted dose, by the method on the FDA label.

Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.

Example

Samples followed dose 1 (dose-1) or a later dose
After dose 1
Dose given
11 mg
Concentration unit
µM (micromolar)
Samples, one per line
2, 3.6 4, 2.2 6, 1.35
Target AUC
1125 µM·min

Result: AUC 1,109 µM·min, within 900 to 1350; adjusted dose 11.16 mg for a target of 1,125 µM·min.

The tool opens with these values already filled in. Replace them with your own.

What you enter

  • Samples followed dose 1 (dose-1) or a later dose (later)
  • Dose given
  • Concentration unit: micromolar (uM) or ng/mL (ng-mL)
  • Samples, one per line: hours from infusion start, then level
  • Target AUC (the label gives 1125)
How this is calculated

Citation

FDA label on DailyMed, Busulfan Injection, section 8.4, Dose Adjustment Based on Therapeutic Drug Monitoring: adjusted dose = actual dose × target AUC ÷ actual AUC, target 1125 µM·min, the sampling schedule and the linear trapezoidal AUC. Read the source ↗

A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.

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Built by Clay Good. Source on GitHub.