Carlton will continue to test its own players in the aftermath of the AFL club's social drugs controversy.

The initiative could bring the club into conflict with the AFL, which a couple of seasons ago stopped Fremantle conducting its own tests.

The Blues last week sacked errant player Laurence Angwin and suspended team-mate Karl Norman for one match after they attended a training session under the influence of ecstasy.

Carlton confirmed this with its own testing, which the AFL excused, but the league might not be so agreeable to an ongoing testing program for social drugs.

Norman resumed playing in tonight's match against Essendon, but had to agree to stringent conditions from the club.

"We will do our own testing of players in addition to what the AFL is doing with ASDA," Collins said before Friday night's match.

"There's no doubt we will impose our own penalties if they don't fall within the penalty regime of the AFL.

"That is going to be endorsed though a code of conduct by the players.

"I'm certain that our club will become better because of it - we all need a reasonable amount of protection in regards to this.

"There is a sub-culture out there with social drugs which does affect football."

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