How Long Does Heroin Stay In Your System For?

Varies according to frequency of use, and dosage. Heroin will leave the system of a person with no tolerance to opiates fully in around 4-5 days, with a heavy tolerance however, this can increase to up to around 14 days.

It is detectable in hair for a lot longer, and in urine for up to 7 days.

While it is true that many addicts believe after a certain amount of sustained use it is impossible to ever fully turn your back on heroin, the chemical itself does leave your system relatively quickly, hence why  habitual users need frequent doses to avoid withdrawal symptoms setting in.

If your addicted to it, it stays with you for the rest of your life because you will most likely never truly stop being addicted to it. For drug/hair tests it can be traced/detected for up to and over ninety days as far as i know.

Welllam not that sure...but according to me.....heroin does get into your blood stream and can be circulated around your body....
So i think it does take sum time for all of it to leave your body.....

Im not sure about your system but it shouldnt be detected in your urine after 5 days but normally 3 days

3-4 days

I was a frequent user,using about a gram a day, and I passed a urine test 3 days after my last use without doing anything to force toxins out of my body faster.  Obviously it has to do with your metabolism but Mickybee is absolutely incorrect.  He is talking about how long it takes for detox, that is to say how long it takes your body to recover from the withdraw caused by heroin cessation.  The drug, at detectable levels, is long gone from your body at that point.

Heroin takes only 72 to 84 hours to be able to pass a urine analysis of any kind no matter how much or how little you use or the frequency of use

Normally 4 to 5 days depending on which test you have.if its a urine dip then 4 or 5 days
but if its a hair strand test then its longer as hair grows slowly about 3mm a week.