Simplify the following text for a Grade 11 native English-speaking person.
Original: The tests were done by French government 's anti-doping clinical laboratory , the National Laboratory for Doping Detection ( LNDD ) which is part of the Ministry of Youth , Sport , and Social Life , and is and is accredited by the World Anti-Doping Agency ( WADA ) . )
Simplified: The test on Landis 's stage 17 A sample had been performed by the French government 's anti-doping clinical laboratory , the National Laboratory for Doping Detection ( LNDD ) . LNDD is a division of the Ministry of Youth , Sport , and Social Life and is accredited by WADA , the World Anti-Doping Agency .