The detection window for opiates, including buprenorphine (a medication used to treat opioid addiction), varies depending on the type of drug test used. Here’s a general guide to how long opiates and buprenorphine can be detected in the body through different testing methods:

1. Urine Tests: Opiates can generally be detected in urine for 2 to 3 days after the last use. Buprenorphine can be detected in urine for up to 7 days. However, these windows can vary based on factors such as the frequency of use, the dose, and individual metabolism.
2. Blood Tests: Opiates are detectable in blood for up to 6 hours to a couple of days after use. Buprenorphine has a longer half-life than many other opiates, so it can be detected in blood for approximately 2 days after the last dose.
3. Saliva Tests: Opiates can be detected in saliva for 1 to 4 days. Buprenorphine can be detected in saliva for up to 3 days after use. The detection window in saliva tests can be influenced by various factors, including the type of opiate and the individual’s metabolism.
4. Hair Tests: Hair tests have the longest detection window, capable of identifying opiate use for up to 90 days after consumption. This includes buprenorphine, which can also be detected for up to 90 days in hair samples. Hair tests measure the metabolites embedded in the hair shaft, providing a longer-term history of drug use.

It’s important to note that these detection windows are approximate and can vary significantly based on a number of factors, including the individual’s metabolic rate, overall health, the frequency and amount of drug use, and the sensitivity and specificity of the test used.