Our institution has a policy of adjusting chemotherapy doses if there is a 10% change in calculated dose. Since some drugs are based on weight and some on BSA, it gets complicated if we stick with one versus the other. Also, this practice aligns with ASCO recommendations.

We have a similar policy. I reject this concept. Intrapatient variability in pharmacokinetics is about 30% for all cytotoxics. Dose modification should be according to tolerance. Even with weight loss if the patient is tolerating the dose, just leave it instead of reducing a few milligrams.   ...