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Benzoylecgonine
Cocaine metabolite found in highest concentration in urine; can last ~ 3 days after use

Esterase (found in the liver)
The primary enzyme that metabolizes cocaine
Smoking → pulmonary veins → left side of heart → aorta → cerebral circulation. Due to bypass of other tissues, this route produces the fastest onset. THIS IS FASTER THAN INJECTION USE.
Method of cocaine use that results in the most rapid delivery to the CNS
Urinary acidification
This enhances urinary excretion of amphetamines
2.5 hours
Time to peak for smoking methamphetamine
15 minutes
Time to peak after injecting methamphetamine
3 hours
Time to peak after snorting methamphetamine
CAMK4
Gene involved in higher susceptibility to cocaine use disorder