to interfering matrix components and provided limits of detection of 20 pg mL −1 for stanozolol and 0.8 ng mL −1 for DHCMT and pseudoephedrine, respectively, notwithstanding an overall recovery of 26%. [...] blood spots in doping control analysis of anabolic steroid esters J Pharm Biomed Anal, 2014 Aug 5;96:21-30. Thomas A, Geyer H, Schänzer W, Crone C, Kellmann M, Moehring T, Thevis M Sensitive determination