Dianabol (or Dbol) is arguably the most widely-used oral for muscle gain and increased strength. That's because it's effectively used by anyone, from experienced bodybuilders to complete beginners.
Use of anabolic steroids was officially banned in the mid-1970s by sports authorities, with the first testing for anabolic steroids at the 1976 Montreal Olympic Games. Anabolic steroids can be detected by analysis of urine samples – or hair. Some athletes try to evade detection by taking anabolic steroids for months at a time before abstaining for a prolonged period before competition.
Ciba stopped making it years ago, as it had fallen out of medical use, but it is still being made, not least for weightlifters and bodybuilders. So, testers are still looking for it. In 2019, the British heavyweight boxer Dillian Whyte was reported as having tested positive for Dianabol, but was cleared by his B sample. The testers are said to have found small amounts of two metabolites of Dianabol in the samples obtained from Whyte, known as 17-epi-methandienone and 6β-hydroxy-17-epi-methandienone. Further tests did not find them, so it was believed that the first sample had been contaminated
