any pharmacist will not put their license on the line to fill narcotics early. If the DEA comes in for an audit and starts asking questions such as why it was filled, who do you think is in trouble. After 6 years of college it's not worth the loss of their job or license to practice.
* you have to, or they will proclaim you guilty since you won't give it to them you have to, or they will proclaim you guilty since you won't give it to them * You would be charged with 'failing to provide a specimen' or perhaps 'witholding evidence', whether you refused to give a urine/DNA/breath sample.