The drugs cocaine and ecstasy were found in his possession as well as a gun.
James Tilson, who is Lil Wayne's lawyer, stated that his client's request for the training record of a sniffer dog used at the time of his arrest had been turned down.
Lil Wayne, who had won four Grammy awards this year, including best rap album for Tha Carter III, has denied the charges but he will have to appear in court again on 11 August.
The rapper is facing the charges of possessing dangerous drugs, possessing drugs paraphernalia and also possessing a weapon.
