New Method Boosts BPC-157 Doping Detection by Tracking Metabolites

The peptide BPC-157 is gaining attention for its potential therapeutic benefits in tissue repair and anti-inflammatory effects. However, it is also listed as a prohibited substance by anti-doping agencies due to its performance-enhancing potential. Current detection methods often struggle with BPC-157's rapid metabolism in the body, making it challenging to detect its abuse. This study addresses the critical need for a robust strategy to identify and characterize BPC-157's metabolic profile to improve doping control measures.

The study successfully identified and characterized 7 novel metabolites of BPC-157, including various hydroxylated and deaminated forms, which are crucial for extending the detection window in anti-doping tests. The most significant finding was the identification of 4 major phase I metabolites, accounting for over 85% of the initial BPC-157 degradation within 30 minutes of incubation. This method achieved a 3.2-fold increase in metabolite detection sensitivity compared to traditional approaches, with a 98% confidence rate in structural elucidation. The primary metabolic pathway involved hydroxylation at specific amino acid residues, leading to a 55% reduction in the parent compound after 60 minutes, demonstrating rapid metabolism. The stable isotope labeling strategy significantly enhanced the ability to distinguish BPC-157 metabolites from background noise, leading to the confident identification of 7 previously uncharacterized metabolic products.