Testosterone Testing: Know Your Numbers

A comprehensive testosterone panel measures Total Testosterone (overall T in your blood), Free Testosterone (the active, usable form), SHBG (sex hormone-binding globulin that binds testosterone), and often LH, FSH, and estradiol to understand the complete hormonal picture.

Total testosterone reference ranges are typically 300-1000 ng/dL, but optimal levels depend on age, symptoms, and free testosterone. Many men with "normal" total T still have symptoms because their free testosterone is low. We evaluate the complete picture, not just one number.

Consider testing if you experience: fatigue, decreased muscle mass, weight gain, low libido, erectile dysfunction, mood changes, brain fog, or poor sleep. Men over 30 should establish a baseline, as testosterone declines approximately 1% per year after age 30.

Yes, fasting for 8-12 hours before your blood draw is recommended. Testosterone levels are highest in the morning, so we schedule tests early. Avoid strenuous exercise the day before, and inform us of any medications or supplements you're taking.

Most testosterone panel results are available within 24-48 hours. We review all results and schedule a follow-up consultation to discuss your levels, what they mean, and treatment options if needed.

Total testosterone measures all testosterone in your blood. Free testosterone (about 2-3% of total) is the unbound, active form your body can actually use. SHBG binds most testosterone, making it unavailable. High SHBG with normal total T often means low free T and symptoms.