Steroid Half life’s – anyone new to steroids may be wondering what this means, even some steroid users may also be wondering what this means. So here in simple terms you can read and hopefully understand all about steroid half life’s and what this term means. 

Basically every drug has a half life, steroids included. If for example, you were to inject 200mg of Decadurabolin once weekly, for 6 weeks, how would you know when you were “off”? Would you be “off” when you had finished your last dose? You would be able to calculate this from the half life of Deca. The half life of Deca is around 14 days. This means that 14 days from your last shot of 200mg of Deca, your blood levels of Deca will contain 100mg of the steroid. Another 14 days from then, i.e. 28 days from last dose, your blood levels will contain 50mg of the steroid. This amount then keeps halving every 14 days. Therefore you can clearly see that when you finish your cycle, even though you are not putting any steroids into your body, you may think that you are now “off”, however you still have, and will still have for some time after your last dose, “active” blood levels of the steroid. Therefore you can plan what to use, how long for, and how long off your cycle, based on these half life’s.

Below a list of half-life’s of the most commonly used steroids, esters and ancillary compounds.


Steroid Detection and Half-life Times

Steroid Detection Times

For the vast majority of anabolic steroid users, steroid detection times are of no concern; after all, most people are not tested. In the U.S. alone, it is estimated more than six-million adults supplement with anabolic androgenic steroids for the sole purpose of performance enhancement, and of these individuals 85-90% does so for personal reasons. They are not competitive athletes, they don’t play any sport; they are simply everyday people, gym rats who are looking to build a better and healthier body. Of course, for the remaining 10-15%, the steroid detection times can become beyond important; after all, a failed test can result in the end of your sporting pursuit. With this in mind, we want to look at the steroid detection times, but before we dive into the actual times we want to look at all the info you need to know.

The Standard Test

If you are subject to anabolic steroid testing, in most all cases, it will be a test that measures your testosterone to epitestosterone levels. In this case, if your testosterone levels are greater than your epitestosterone levels beyond a certain point, you will fail the test. In most athletic circles, the baseline is 6:1 testosterone:epitestosterone; however, there are a few organizations around the world that hold to a 4:1 ratio.

In-order to beat such testing, you have two options; ensuring the hormones have cleared your system in a way that will ensure your levels are not elevated or skewing the levels. For years, the East Germans masterfully perfected this process by ensuring all their athletes were administered epitestosterone; in doing so, they ensured they stayed within the acceptable 6:1 ratio; their testosterone levels were up, but so were their epitestosterone levels. Then came the late Bay Area Lab Cooperative (BALCO), and they took what the East Germans had done and perfected it even more. Of all the performance enhancing drugs provided by BALCO, none would be more important in-regards to steroid detection times than Tetrahydrogestrinone (THG) which would take the name more commonly known as “The Clear”; it would hold this name due to its undetectable nature despite holding strong Trenbolone like qualities.

At any rate, as for the test itself, the standard test is simply a urinalysis and nothing more. There are hair-follicle test that can be administered; however, most sporting organizations do not perform such test as they have been found to be flawed in numerous ways. In any case, when the athlete understand steroid detection times, if he is aware of when a test may take place, which isn’t that hard to do, he can ensure he passes each and every time.

Choosing the Right Steroids

If you are a tested athlete, if you’re going to supplement with anabolic steroids you must understand steroid detection times thoroughly if you stand a chance. For the tested athlete, you will be somewhat limited in-regards to which steroids you can use. For example, if you’re a truly tested athlete, Nandrolone based steroids can never be used as their detection time stretches past a year. Many testosterone compounds must also be avoided; especially large esters or testosterone mixtures, but the smaller or ester free versions are often an option. Of course, many athletes who are tested are only done so for show, and if that’s the case, well, it really doesn’t matter what you use. In any case, for show or a legitimate test, if you understand steroid detection times there’s really no reason for you to have a problem.

Steroid Detection Time:

Anavar 3 weeks
Anadrol 2 months
Andriol 1 week
Boldenone Undecylenate 4-5 months
Clen 4-5 Days
Deca 18 months
D-Bol 5 weeks
Ephedrin 4-5 days
Halo 2 months
Masteron 3 weeks
Methamphetamin 6-10 Days
Nandrolon Phenylprop 12 months
Primo Depot 4-5 weeks
Proviron 5 weeks
Sustanon 3 months
Tremolon Acet 4-5 weeks
Test cyp 3 months
Test enat 3 months
Testosteron suspension 1-3 days
Test Prop 2-3 weeks
Winny oral 3 weeks
Winny inj 2 months (some say 6 months)


Steroids Half-Life

Oral steroids Drug Active Half-Life 
Anadrol / Anapolan50 (oxymetholone) 8 to 9 hours 
Anavar (oxandrolone) 9 hours 
Dianabol (methandrostenolone, methandienone) 4.5 to 6 hours 
Methyltestosterone 4 days 
Winstrol (stanozolol)
9 hours 
Halotestin (Fluoxymesterone) 9.5 hours 
Turinabol (Tbol) 16 hours 

Injectable Steroids: Drug Active Half-Life 
Deca-durabolin (Nandrolone decanate) 15 days 
Equipoise (Boldenone undecylenate) 14 days 
Finaject (trenbolone acetate) 3 days 
Primobolan (methenolone enanthate) 10.5 days 
Sustanon or Omnadren 15 to 18 days 
Testosterone Cypionate 12 days 
Testosterone Enanthate 10.5 days 
Testosterone Propionate 4.5 days 
Testosterone Suspension 1 day 
Winstrol (stanozolol) 1 day 

Steroid Esters: Drug Active Half-Life 
Formate 1.5 days 
Acetate 3 days 
Propionate 4.5 days 
Phenylpropionate 4.5 days 
Butyrate 6 days 
Valerate 7.5 days 
Hexanoate 9 days 
Caproate 9 days 
Isocaproate 9 days 
Heptanoate 10.5 days 
Enanthate 10.5 days 
Octanoate 12 days 
Cypionate 12 days 
Nonanoate 13.5 days 
Decanoate 15 days 
Undecanoate 16.5 days

Ancillaries: Drug Active Half-Life 

Arimidex 3 days 
Clenbuterol 1.5 days 
Clomid 5 days 
Cytadren 6 hours 
Ephedrine 6 hours 
T3 10 hours 
Letrozole 45 hours 
Nolvadex (Tamoxifen Citrate) 14 days