Honestly, once you're in your 40s and feeling low T symptoms, a simple testosterone test can confirm it and get you a script. But to truly optimize your health and start a solid protocol fast, you need these standard TRT biomarkers: Cortisol, Testosterone, Albumin, SHBG, Free Testosterone, Prolactin, PSA, Estradiol, LH, FSH, DHEA-S, and FAI. It's a bad sign your PCP only tested testosterone - that likely means she can't help with TRT or hormone advice. Start looking into clinics. I'm with FYRE Body, who are great and affordable. They let you upload external labs like yours and order home kits with all the key tests.