Blood Drug Testing

How long does it take injected HGH and transdermally-absorbed Fentanyl to clear the blood for a drug test?

Let's say I stopped using these substances this morning; how long until a blood test would no longer discover evidence of their usage?

Public Comments

1. Fentanyl will not show up on any test. HGH wont show up on drug tests, but i dunno about steroid tests (not familiar with what does and doesnt) try erowid.com