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Greetings of the day
Its very true information.
e is metabolite of amphetamine
. So it is the one which is detected.It is one of the drug tested is dope test.
If you are i age group of 40-50, cessation of periods could likely be due to menopausal age.
In case you need any further assistance, will be glad to assist you.
Wishing you happy and healthy life
Dr Deepak K K