[140- alder (år)] x vægt (kg) CLcr (ml/ min) = ----------------------------------------- (x 0, 85 for kvinder) 72 x serum kreatinin (mg/ dl)
[140 - vanus (aastates)] x kehakaal (kg) CLcr (ml/ min) = --------------------------------------------------- (x 0, 85 naistel) 72 x seerumi kreatiniinisisaldus (mg/ dl)