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    • 3. 发明授权
    • Method for measurement of bioavailable testosterone
    • 生物可利用睾丸激素测定方法
    • US09482678B1
    • 2016-11-01
    • US14661306
    • 2015-03-18
    • Rebecca Caffrey
    • Rebecca Caffrey
    • G01N31/00G01N33/53G01N33/74
    • G01N33/743
    • Provided are methods for determining level of bioactive testosterone in a biological sample. In one aspect, aromatase enzyme is utilized to convert free, bio-available testosterone into estradiol and the amount of estradiol is measured before and after the addition of enzyme. The difference in measurements provides the amount of bioactive testosterone in the sample. In another aspect, a competitor of testosterone binding to SHBG is utilized to displace testosterone bound to SHBG. Measurements of total testosterone in the sample before addition of competitor and afterwards are taken, such that the delta reflects the amount of testosterone that was bound on SHBG.
    • 提供了用于确定生物样品中生物活性睾酮水平的方法。 在一个方面,芳香酶用于将游离的生物可用睾酮转化成雌二醇,并且在添加酶之前和之后测量雌二醇的量。 测量差异提供了样品中生物活性睾酮的量。 另一方面,使用与SHBG结合的睾丸激素的竞争者来置换与SHBG结合的睾丸激素。 在添加竞争者之前和之后测量样品中的总睾酮,使得三角洲反映与SHBG结合的睾酮的量。