in the process of an arrest the drugs that were for personal use were bought at 2grams of cocaine and 2 grams of heroin but were held in the mouth. and when arrest were compromised because of the saliva in the mouth. so will the weight be the same and how the process work to determine actually amount!
The drugs will be sent to a lab to determine substance and weight. The chemists or technicians can extrapolate weight based on a small amount (a method that the chemist can be cross examined on). If the case is going into the grand jury the lab gets it done pretty quickly so that the DA doesn't blow certain statutory time constraints. If you are charged with a crime I suggest you speak with an attorney ASAP.
The lab professionals will examine the evidence to determine if it was compromised in any way. Only a lab professional can answer that question.
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