Renal transplant recipients who receive larger donor kidneys relative to their own body weight may have better kidney function at 12 months than those who receive smaller kidneys, according to a recent paper. Sikora and co-workers calculated the 'volume dose'—the ratio of donor kidney volume to recipient weight—of 125 living kidney donor-to-recipient pairs. Transplant recipients in the highest tertile of volume dose had a reduced risk of developing an eGFR of <60 ml/min/1.73 m2 (odds ratio 0.23, 95% CI 0.07–0.81).