How to Read Your Testosterone Blood Test Results

## Why Lab Interpretation Matters\n\nA testosterone test result without context is nearly useless. The "normal range" in lab reports is a broad statistical band — it does not tell you what is optimal for *your* age, symptoms, or goals.\n\n## Key Metrics to Know\n\n### Total Testosterone\nThe sum of bound and unbound testosterone in your blood. For men under 40, 400–900 ng/dL is a reasonable target. Below 300 ng/dL is clinically low.\n\n### Free Testosterone\nThe testosterone actually available to your cells. This is the most important number for symptom correlation. Free T below 6.5 ng/dL in men over 40 often correlates with low-T symptoms.\n\n### SHBG (Sex Hormone Binding Globulin)\nA protein that binds testosterone, making it inactive. High SHBG can cause "normal" total T with significant symptoms — your free T is actually low.\n\n### Estradiol (E2)\nAn estrogen form that men need in small amounts. Too much (often from aromatization of excess T) suppresses testosterone and causes gynecomastia and water retention.\n\n## What to Ask Your Doctor\n\n- What is my total testosterone in ng/dL?\n- What is my free testosterone (direct or calculated)?\n- Is my SHBG within optimal range for my age?\n- Have you checked estradiol (E2)?\n\n## Action Steps\n\nIf your free T is low or SHBG is high, consider a consultation with a TRT provider. Many online clinics offer at-home testing with doctor review within days.