April 18, 2017. 1  Deadline to file individual tax returns (Form 1040, 1040A, or 1040EZ) for the year 2016 or to request an automatic extension (Form 4868). 2  Last day to make a contribution to traditional IRA, Roth IRA, Health Savings Account, SEP-IRA or solo 401(k) for the 2016 tax year.
However, if an advanced drug test is ordered, fentanyl is easily detected through urine, hair, saliva, and blood tests. Fentanyl can be detected in urine for eight to 24 hours, in blood for up to 12 hours, in saliva for one to three days, and in hair for up to 90 days.
We have found the answer to the time period for which fentanyl would be present in your system. If you look into the half life of fentanyl, it is up to 7 hours. That means that in the urine test it would be present for up to 48 hours and after 48 hours it would not be detected through the urine test.