In competitive binding assays, the logit-log dose relationship, in which the response is defined by: R = logit y = log 10 ( y 1- y ) where y = b b 0 with b = fraction of tracer bound and b0 = value of b with no unlabelled ligand in the system. Logit transformed assay data frequently yield straight-line dose-response curves, amenable to statistical analysis.
PAC, 1994, 66, 2513. 'Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)' on page 2522 (https://doi.org/10.1351/pac199466122513)