IVIg lean body weight - dosing calculator

IVIg is a scarce resource. Lean body weight dosing is a tool that enables eligible patients to receive IVIg in the lowest effective dose.(1)


Weight (kilograms)
Ideal body weight (IBW) = 0 kg
Dose-determining weight (DDW)* = 0 kg

*Important: This DDW should be applied for overweight and obese patients in consultation with the managing clinician. This calculator is only a tool and the Blood Service takes no responsibility for calculation provided.


  1. Chow S, Salmasi G, Callum JL, Lin Y. Trimming the fat with an IVIg approval process. Letter to the editor. Transfusion and Apheresis Science 2012;46:349–352.
  2. Aston DL, Lefante J, McNae A, et al. The Effect of the Introduction of the Criteria for the Use of Intravenous Immuloglobulin (IVIg) in Australia on the Supply of IVIg in Western Australia. Poster presented at: 2009 HAA Annual Scientific Meeting; 2009 October 18–19; Adelaide, South Australia.
  3. Devine BJ. Clinical pharmacy case studies – Case number 25: gentamicin therapy. Drug Intell Clin Pharm 1974;8:650–655.
  4. ln correspondence: Lunn M, Frank E. Institute of Neurology, University College London Hospitals, London.