Following the publication of the Research Article by Yong Huang, Alexander Louie, Qiyun Yang, Nicholas Massenkoff, Connie Xu, Peter W Hunt & Winnie Gee titled ‘A simple LC–MS/MS method for determination of kynurenine and tryptophan concentrations in human plasma from HIV-infected patients’ in the June 2013 issue of Bioanalysis (Bioanalysis 5[11], 1397–1407 [2013]), the following errors have been brought to our attention:
‘Potassium buffered saline’ on pages 1397 and 1406 was incorrect and should have been ‘phosphate buffered saline;
Supplementary Table 4 on page 1403 was incorrectly cited and should have been Supplementary Table 3.
The authors and editors of Bioanalysis would like to sincerely apologize for any inconvenience or confusion this may have caused our readers.