The World Anti-Doping Agency (WADA) reinstated credentials of a drug testing laboratory in Rio de Janeiro for the Olympic Games, ending a month-long suspension that had threatened to embarrass the host country.The decision avoided a backup scheme to send blood and urine samples from Olympic athletes to labs outside Brazil during the Games. Similar steps were taken after the same lab at the Federal University of Rio de Janeiro lost its credentials for the 2014 World Cup, also held in Brazil. The doping control laboratory was suspended on June 22 due to a non-conformity with the International Standard for Laboratories.WADA said the reinstatement means Rio officials can resume testing blood and urine samples this week and that they see no need for further action against the lab. Around 7,000 samples will be tested by the Rio lab during the Olympic period. Doping is a major concern ahead of the Rio Games on August 5-21, the first Olympics to be held in South America. Several anti-doping agencies are pushing to ban Russian athletes after charges of state-backed doping at the 2014 winter Olympics.