Thanks for writing to us.
The amount of methamphetamine
that needs to be ingested depends on many factors like being a smoker, alcoholic, associated drug intake, the amount of drug taken, rate of its metabolism
, brand name that you are ingesting, associated fluid intake, time of taking the urine sample, etc. A deep assessment needs to be carried out.
I hope this information has been both informative and helpful for you.
Dr. Rakhi Tayal