Phil Howard has received an e-mail from Alison Thomson, a lecturer at Strathclyde school of pharmacy regarding vancomycin and gentamicin. The scottish antimicrobial prescribing group have a vancomycin calculator, a copy of which we have on this site.
They use the concept of "maximum body weight” (IBW + 20% if the patient is > 20% above IBW) when estimating CrCl. And their guidance for these two drugs is available at
They also have a gentamicin calculator, but it is on a different regimen to Hartford. If you want a look at what can be done it's here: