One Tube, More Options: Free Testosterone Testing Achieves Highest Quality

Clinical Background

In the bloodstream, most testosterone is present in a conjugated form, with only a tiny fraction—around 1-2%—existing as free testosterone. It is widely accepted that hormones in their free form are biologically active. As a result, measuring free testosterone holds significant clinical importance in diagnosing related conditions, such as Polycystic Ovary Syndrome (PCOS) and Male Hypogonadism (MH).

Testosterone and SHBG Regulation Mechanism in Blood Circulation

Clinical Application of Testosterone

Method Comparison with LC/MS-MS

The correlation between Mindray's free testosterone immunoassay and the LC/MS-MS method for measuring free testosterone is greater than 0.95, indicating a strong and favorable relationship.

Mindray Can Provide Both Free Testosterone and Calculated Free Testosterone

• Mindray officially launched its free testosterone immunoassay product in July 2025. This product is compatible with a range of Mindray immunoassay instruments, enabling the detection of free testosterone.
• In terms of calculated free testosterone, Mindray offers immunoassay products for total testosterone and SHBG. When used in conjunction with Mindray's software, the value of calculated free testosterone can be automatically computed.