Determining exactly how long heroin is detectable in the body depends on many variables, including which kind drug test is being used. Heroin - also known as Diacetylmorphine, horse, smack, dragons tail, smack, junk, H - can be detected for a shorter time with some tests, but can be "visible" for up to three months in other tests.
The timetable for detecting heroin in the system is also dependent upon each individual's metabolism, body mass, age, hydration level, physical activity, health conditions and other factors, making it almost impossible to determine an exact time heroin will show up on a drug test.
Heroin Drug Tests TimetableThe following is an estimated range of times, or detection windows, during which heroin can be detected by various testing methods:
Urine Test: 2-4 days
Blood Test: 6 hrs`
Saliva Test: 1-4 days
Heroin, like like many other drugs, can be detected with a hair follicle drug test for up to 90 days.
American Association for Clinical Chemistry "Drugs of Abuse Testing." Lab Tests Online. Revised 2 January 2013.
LabCorp, Inc. "Drugs of Abuse Reference Guide." Accessed March 2013.
OHS Health & Safety Services. "How long do drugs stay in your system - including alcohol?." Accessed March 2013.