STEROID HALF-LIFE INFORMATION PAGE

Half-Life of esters attached to steroid molecules:
Undecanoate: 17 days
Isocaproate: 9 days
Acetate: 3 days
Deccanoate: 15 days
Valerate: 8 days
Nanoate: 14 days
Butyrate: 6 days
Enanthate: 11 days
Propionate: 5 days
Heptanoate: 11 days
Pheylpropionate: 5 days

The detection times for the esters are a guideline and obviously everybody is different, factors that will increase detection time is higher body fat percentage, dosage and duration.This is a conservative guideline so following it should make most athletes relatively safe.

Detection times:
Less than 24 hours:
Ephedrine (approx. 6 hours)
T-3 thyroid hormone (approx. 10 hours)

3 to 5 days:
Clenbuterol
Clomid

7 days:
Testosterone Undecanoate

2 to 3 weeks:
Stanozolol
Oxandrolone

4 to 6 weeks:
Ethelestrenole
Mesterolone
Methandienone

6 weeks to 2 months:
Fluoxymesterone
Formebolone
Oxymesterone
Stanozolol Depot
3 months Sustanon
Testosterone Cypionate
Testosterone Enanthate
6 months Boldenone
Methenolone Enanthate
Trenbolone
Trenbolone acetate
Methandienone

12 to 18 months:
Nandrolone