monitoring, preclinical drug development and diagnostic analysis of metabolic disorders in newborns. DBS sampling is characterized by cost-effectiveness, straightforwardness, robustness and facilitated storage [...] our knowledge, unprecedented detection windows for the tested anabolic agents accomplished by DBS sampling to support out-of-competition control efforts for the tested anabolic agents. Furthermore, the [...] processes in routine sports drug testing?-Part 3: LC-MS/MS-based peptide analysis for dried blood spot sampling time point estimation. Drug Test Anal. 2023 Feb 24. doi: 10.1002/dta.3463. Epub ahead of print.

isotope-labelled internal standards. Notably, the obtained results are largely independent from the sampling device, and the method works for cellulose-based DMPK cards as well as polymer-based TASSO devices

several factors, such as the individual composition of the OF, the sex of the OF donor, the time of sampling, the OF volume and the incubation conditions. Overall, 20 % of all generally valid analyses were

processes in routine sports drug testing?-Part 3: LC-MS/MS-based peptide analysis for dried blood spot sampling time point estimation. Drug Test Anal. 2023 Feb 24. doi: 10.1002/dta.3463. Epub ahead of print. [...] Donike, M., Ljungqvist, A., Fagerhof, M., Jensen, J., Hemmersbach, P., Oftebro, H., Haug, E.: Blood sampling in doping control. Int. J. Sports Med. (18) 1997 8 12. Breidbach, A., Platen, P., Schänzer, W.: