Any nation with three or more positives in a calendar year faces a ban of up to four years and the IWF has previously suspended nine countries for repeated doping offences.
However, the IWF Executive Board voted to allow Thailand to host the World Championships despite none of their lifters taking part.
"TAWA (Thai Amateur Weightlifting Association) still continues to fulfil its obligation and will deliver the organisation of the 2019 IWF World Championships despite the fact that no Thai athletes will be entitled to participate," the IWF said in a statement https://www.iwf.net/2019/03/08/iwf-executive-board-meeting-congress-las-vegas.
The International Olympic Committee (IOC) meets on March 26 to discuss progress in cleaning up the sport and the IWF's decision to allow Thailand to host the World Championships is expected to be discussed.
Weightlifting is effectively 'on probation' at Tokyo 2020, with the IWF having been told to clean up the sport if it is to be on the 2024 Olympic programme.
(The story corrects number of weightlifters to eight in para two.)
(Reporting by Rohith Nair in Bengaluru; Editing by Toby Davis)
