How to convert file with extension ARA: Unless there are suggested applications listed below the extension description, that are able to convert the system files, there is usually no way to convert system files into any other file format.
In more straight way: 1  Sex hormone-linked testosterone is amount linked with SHBG (sex hormone binding globulin) in blood. 2  Free testosterone is a amount in blood not linked a any kind of protein or other stuff. 3  Bioavailable testosterone is amount in blood is readily available for biological effect. Albumin and other proteins bind with little strength to it, so if it not really free in peripheral tissues this testosterona releases from proteins and exerts biological effect.
However, in certain cases, for example when the level of SHBG is abnormal, a test for free or bioavailable testosterone may be performed as it may more accurately reflect the presence of a medical condition.