Sustanon yog cov tshuaj uas muaj cov sib xyaw ntawm ntau hom esterified ntawm testosterone. Yog li, kom paub meej, Sustanon yog ib daim ntawv ntawm testosterone, tsis yog cais cov steroid compound. Cov khoom xyaw tseem ceeb hauv Sustanon yog testosterone.
Testosterone yog ib yam tshuaj hormones tsim nyob rau hauv tib neeg lub cev, thiab nws plays lub luag hauj lwm tseem ceeb nyob rau hauv txoj kev loj hlob thiab tu ntawm txiv neej cov ntaub so ntswg thiab txiv neej cov yam ntxwv. Sustanon feem ntau raug sau ua ib daim ntawv ntawm testosterone hloov kho (TRT) rau cov tib neeg uas tsis muaj testosterone.
Qhov sib txawv esters hauv Sustanon yog tsim los muab kev tso tawm ntawm testosterone mus rau hauv cov hlab ntsha hauv lub sijhawm ntev. Ntau yam esters hauv Sustanon suav nrog testosterone propionate, testosterone phenylpropionate, testosterone isocaproate, thiab testosterone decanoate.