CONGRESS 2023 - Androgens and Sports: Conventional urine and modern dried blood sample testing methodologies

Androgens are the naturally occurring or synthetic hormones which can increase lean body mass and decrease fat mass and are the most effective and widely abused ergogenic drugs in sport. The detection methodologies for the exogenous steroids is mostly based on the gas/liquid chromatography and mass spectrometry, while detection of the exogenous administration of endogenous steroids requires more complex methodologies including the longitudinal monitoring of individual urinary steroid concentrations/ratios and isotope ratio mass spectrometry. Although, urine has always been the first choice of sample matrix to detect androgens in sports. However, blood matrix is also now paving its way towards a complementary matrix for detection of androgens in sports. Dried blood spots (DBS) analysis is the latest tool in sports drug testing. DBS testing has advantages in the collection, shipment, and storage compared to traditional urine and blood-based procedures. The World Anti-Doping Agency (WADA) has recently introduced DBS testing as an implementation for routine doping analysis during the recent Olympic and Paralympic Games in Tokyo and Beijing. DBS samples can be obtained with relatively little training and require minimal invasion at the collection site. A variety of devices based on micro-lancet and micro-needle approaches have been applied in the DBS collection. Most androgens in DBS are stable at room temperature, so there are no specific requirements during transport. Also, considering the small size and weight of DBS, the DBS-based technique is more cost-effective compared to urine or blood samples. However, as a microscale sample, DBS require more sensitive and accurate analytical methods. The Drug Control Centre, King’s College London (a WADA accredited lab), we are currently investigating the use of DBS testing in our systematic regular analysis as a new methodology. This presentation will discuss the current situation, perspectives, and challenges of implementing DBS testing for detecting androgens in sports.

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