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.
If you are taking a drug test and you are concerned about the levels of fentanyl, the levels will vary depending on the testing method. For example, urine can detect fentanyl eight to 24 hours after use. Blood tests can only accurately test up to 12 hours, while saliva can detect levels of fentanyl for up to two days. Hair follicle tests, however, can detect the use of fentanyl for up to 90 days, because the drug may have cleared your system, but will still be present in your hairs for three months. 1  The amount of time it takes for a drug to leave your system is based on the half-life of the drug.