D-amphetamine salt combo. My son got access to it. He said he took several 10mg pills over 10hrs. How long do I have to get blood test for + result?

Stimulant use. I am curious. If your son admitted to taking the pills, why do u need blood test?.
See below. For a healthy person who isn't prescribed 10s of milligrams of d-amphetamine, doing so can create physical and behavioral symptoms that need to be monitored. If the person has cardiac or other disorders, life-threatening complications can arise. Seek an evaluation from urgent care.