Evaluation of Dried Blood Spots as an Alternative Sample Matrix for Equine Anti-doping Analysis

Benjamin C Moeller, Zicheng Yang
Drug Testing and Analysis 2020 October 1
Controlling the abuse of prohibited substances such as anabolic steroids, selective androgen receptor modulators, β-adrenoceptor agonists, and blood doping agents is of great interest to racing authorities. The use of Dried Blood Spots (DBS) as an alternative sampling approach may be a feasible approach for controlling the use of these agents. To assess the feasibility of using DBS in equine blood, an 11-minute liquid chromatography - mass spectrometry method was developed on a triple quadrupole mass spectrometer following extraction from Whatman 903 DBS cards. A total of 50 compounds across multiple compound classes were detectable with reproducible results. The stability was assessed with good results after almost 3 months of storage at ambient temperatures. These results suggest that the use of DBS may be a feasible alternative sampling approach in equine drug testing.

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