Blood Drug Testing

Can a drug test tell how long ago and how much of the drug you took and over what period of time????

Just wondering If thats possible on the lab drug test (immunoassay & GC/MS test) not the at home drug kits.. I have a perscription I took 5 day before I got the perscription. I took under the recommended dose and when I got the script I took the drug as recommended right up thru the test..Could they tell if I took it for those 5 days, it was a urine test and the drug was a long acting benzo.

Public Comments

1. the length of time a drug has been taken can be determined, but usually by testing hair follicles
2. Maurice, it is reasonably safe to say the pill has rinsed out of you. If it is a prescription you have a good, legal argument. Reefer is what stays in the system the longest. that can stay for as long 28 to 30 days.Think positive..
3. im not sure.. but i dont think its possible..
4. I am not sure
5. YES! especially with benzodiazepines and opiates.