Liposomes comprising an FKBP52 targeting agent (FTA) are disclosed. Pharmaceutical compositions comprising an FTA, a solvent, and a surfactant are disclosed. Pharmaceutical compositions comprising a cyclodextrin and/or a derivative thereof and an FTA are also disclosed. Method of detecting one or more compounds in a sample by liquid chromatography/tandem mass spectrometry (LC/MS/MS), methods of treating or preventing cancer, benign prostatic hyperplasia (BPH), prostatic intraepithelial neoplasia (PIN), prostatitis, enlarged prostate, or insulin-independent diabetes, and methods of inhibiting spermatogenesis or fertilized oocyte implantation in a mammal are also provided.
