The review by Bidart, Thuillier, Augereau
et al., entitled “Kinetics of Serum Tumor Marker Concentrations and Usefulness
in Clinical Monitoring” (Clin Chem 1999;45:1695-1707), contains an error in the
formula of tumor marker t1/2. The correct formula should be as in reference 94
of the article, t1/2 = log2*dt/log(tm1/tm2) or as t1/2 = In2*dt/In(tm1/tm2). The
author apologizes for any confusion or inconvenience this caused.