Drugs testing service Wedinos 'reduces harm' to users
16 April 2014 Last updated at 14:32 BST
Claims that steroid dealers are using publically-funded drug testing as guidance for which drugs to take have been rejected by the Welsh government.
Concerns have been raised that steroid dealers are using results by Welsh Emerging Drugs and Identification of Novel Substances Project (Wedinos) to market their products.
But the Welsh government says the accessibility of the service helps gets harm reduction messages to those most at risk.
Paul Martin reports.