Martín Escudero, M. Del PilarMuñoz Guerra, Jesus A.García Tenorio, Soledad VargasSerrano Garde, EsterSoldevilla Navarro, Ana BelénCortes Carrillo, NuriaGalindo Canales, Mercedesdel Prado, NayadeFuentes Ferrer, ManuelFernández Pérez, CristinaBehnisch, Peter AlexanderBrouwer, Abraham2023-06-172023-06-172021-03-262227-904010.3390/chemosensors9040062https://hdl.handle.net/20.500.14352/7394The study was funded by grants awarded by the Spanish Ministry of Science and Innovation (DEP2016–78559-R; sub-program DEPO; DEP2012-40156) for competitive investigation.The anabolic androgenic steroids (AAS) are the most frequently consumed performance enhancing drugs (PED) in sports. In the anti-doping field, the detection of AAS is carried out by the analysis of the athlete’s urine using methodologies based on liquid/gas chromatography-mass spectrometry. Unfortunately, the detection of unknown compounds is not possible. BDS’s AR CALUX® bio detection technology was studied as an indirect method to detect the administration of a single dose of testosterone (T). Twelve T and placebo single dose administered men volunteers underwent a triple-blind crossover clinical trial. The UGT2B17 deletion was present among the volunteers and evenly distributed in heterozygous (ins/del), wild-type homozygous (ins/ins), and mutated homozygous (del/del) groups. A significant statistical difference in terms of bioluminescence was observed after the testosterone (T) administration for the three types of polymorphic groups. The ratio of means between the pre- and post-T administration periods, depending on the type of polymorphism, was in group ins/ins 3.31 (CI. 95%: 2.07–5.29), group ins/del 4.15 (CI 95%: 3.05–5.67), and group del/del 2.89 (CI 95%: 2.42–3.46). The results of the study are very promising, as they may offer us the possibility of designing a detection approach that, based on intra-individual monitoring of androgenic values, in the UGT2B17 deletion type.engAtribución 3.0 Españajournal articlehttps://doi.org/10.3390/chemosensors9040062https://www.mdpi.com/2227-9040/9/4/62open access61:796DopingUGT2B17 genotypeSteroid profileTestosterone administrationSportAthlete biological passportAR CALUX®Androgenic activityMedicinaMedicina del deporte32 Ciencias Médicas