Yes and No.
The Defense managed (God knows how) to get the Judge to allow the Toxicology Report. HOWEVER, once they got it on record, and made the Jury aware that there was a TOX report showing THC levels, they dropped it.
This way the Jury is left to PONDER how MUCH he was under the influence of drugs.
Being left to wonder is much more productive for the Defense because the argument over whether the exact amount Trayvon had in his system COULD have influenced his behavior (and the dozens of witnesses that would be required to debate each side of that argument) would prove nothing.
I don't think Trayvon was 'high' during this event. I think he planned to get high before sitting down to watch the game. I don't think the levels shown on the Tox report are high enough to be of any concern.
So, the Jury not knowing means they can make their own assumption. Maybe that's not 'fair', but it is 'smart'.
Thanks for the thorough explaination about the drug evidence, ucansee2. Very much appreciated.