Normal kidneys size in adults
Normal kidneys size in adults varies depending on the height of the individual. Also, in general, it decreases with age and increases with body mass index (BMI).
The size of the kidneys is measured mainly sonographically, although both CT and MRI scans also can be used to estimate kidneys size.
The average length pole to pole (LPP) of an adult human kidney is 10-13cm (4 to 5 inches). In general, left kidney is slightly longer than the right.
As expected, solitary kidneys are longer.
- 1. Emamian SA et al, Kidney dimensions at sonography: correlation with age, sex, and habitus in 665 adult volunteers. AJR Am J Roentgenol. 1993 Jan;160(1):83-6.
- 2. Glodny B et al, Normal kidney size and its influencing factors - a 64-slice MDCT study of 1.040 asymptomatic patients, BMC Urol. 2009; 9: 19.
- 3.Kang KY et al. A comparative study of methods of estimating kidney length in kidney transplantation donors. Nephrol Dial Transplant. 2007;22:2322–2327