Function Promoting Therapies, LLC, (FPT, LLC) and the firm's in-use (commercialization) arm of FPT, LLC, is organized around providing advanced technologies designed to improve accuracy in the diagnosis and rational management of testosterone replacement therapy for male reproductive disorders. Designated TruT Companion Diagnostics, the firm's approach is to achieve definitive diagnosis and institute rational management of androgen disorders. Based on the fundamental discovery of testosterone partitioning, FTC personnel has developed an accurate free testosterone determination method that with other key elements is enabling a framework for accurate determination of free testosterone values and to make progress towards an understanding of the basis of androgen disorders and other conditions.