This, of course, depends on the actual substance (amount and type) and the person using them. Steroids can remain detectable in a persons system anywhere from 1 week to over a year after use. For the most popular substances like nandrolone (deca, testosterona), one year is the usual time that they could actually be detected. For injectable testosterone, between 3-6 months is commonly sufficient. Luckily, for steroid users, the cost of a steroid test is very expensive (heard its $280) and hardly ever done. If you are being tested for "drugs" 99% of the time a steroid test is not done. Random tests for college sports will test for them though (the cost is probably why they are random). People usually worry more than they should though. Even though a drug "can" be detectable, a lot of times they aren't. Detection Times These detection times were taken from different sources. This table if for informational purposes only, this website will not be held responsible if you are caught on a drug test. This isn't medical advice, only information gathered from various sources - nandrolone decanoate 18 months - nandrolone phenylpropionate 12 months - boldenone undecyclate - metehenolone enanthate - trenbolone - trenbolone acetate - injectable methandienone 5 months - testosterone-mix (Sustanon & Omnadren) - testosterone enanthate - testosterone cypionate 3 months - oxymetholone - fluoxymesterone - injectabel stanozolol - formebolone - drostanolone propionate 2 months - methandienone - mesterolone - ethylestrenole - noretadrolone 3 weeks - oxandrolone - oral stanozolol 3 weeks - testosterone propionate 2 weeks - testosterone undecanoate 1 week - clenbuterol 4 days Alternative description: Alternative designation: How long do steroids stay detectable in your system?