Clean tox screen means there's no drugs in his blood or urine. There could still be drugs trapped in his fat cells from the good old days.
Tox screen was clean.
You're thinking trauma? He's an admitted user. Drugs crashed his immune system.
You're thinking trauma? He's an admitted user. Drugs crashed his immune system. [SEP] Tox screen was clean. [SEP] Clean tox screen means there's no drugs in his blood or urine. There could still be drugs trapped in his fat cells from the good old days.