How do you know for sure if your marijuana was "laced"? my panic attack-like symptoms lasted over 24 hrs. shaking, rapid heartbeat, hard breathing

Speak to your pediatrician: About this. You may need consent from their parents to have a drug screening test done to identify other recreational drugs found in your blood/urine.

See below: Many of the drugs that would lace marijuana would not be detected after 24 hrs if at all. Also, your reaction could be due to plain old unadulterated marijuana.