Testosterone/Estradiol Ratio
The testosterone-to-estradiol ratio reflects the balance between androgen and estrogen activity, largely set by the aromatase enzyme that converts testosterone to estradiol. Low ratios in men can accompany obesity, aging, and alcohol use and may contribute to low libido, erectile dysfunction, and gynecomastia. Weight loss and aromatase-related interventions can improve the ratio.
Optimal range: who says what
No institution or named practitioner we track states an optimal target for Testosterone/Estradiol Ratio. How we verify ranges.
- No stated targetNo universal optimal establishedAssay- and context-dependent; the absolute levels of each hormone matter more than the ratio
- Lab reference intervalNo established lab reference rangeWhat a lab report flags against. A lab interval is not an optimal target.
1 providers include this
Additional Specialized Tests
Why Testosterone/Estradiol Ratio matters
Important for men's hormonal balance. A low ratio is associated with low libido, erectile dysfunction, and increased body fat. May indicate need for aromatase management.
Which Providers Test Testosterone/Estradiol Ratio?
Of the panels we itemize, only Superpower ($349/year, 100+ biomarkers) includes Testosterone/Estradiol Ratio.
1 panel that includes it, cheapest first
| Provider | Annual Cost | Total Biomarkers | $/Biomarker |
|---|---|---|---|
 Superpower | $349 | 100+ | $3.49 |
$/Biomarker is annual cost divided by the panel's advertised biomarker count, not the price of this one test. We track 23 blood test providers (32 plans); 21 of those plans are itemized marker by marker. Compare all of them.
20 itemized panels do not include Testosterone/Estradiol Ratio
WHOOP Advanced Labs · Labcorp OnDemand · Life Extension Elite · Everlywell · Mito Health · InsideTracker · Function Health · Marek Health Base · Marek Health Comprehensive · Marek Health Complete · Marek Health Executive · Blueprint · Empirical Health · Oura Health Panels · SiPhox Health · Hims Labs · Healthspan · Vitality Blueprint Standard · Vitality Blueprint Elite · Ultrahuman Blood Vision Annual
11 providers not itemized in our matrix
We have not itemized these marker by marker (some sell tests one at a time), so this page cannot say whether they offer Testosterone/Estradiol Ratio. Check with them directly.
Life Extension Standard · Quest Health · Ultrahuman Blood Vision · Lifeforce · Hundred Health · Personalabs · Walk-In Lab · HealthLabs · WHOOP Specialized Panels · Marek Health Essential · Vitality Blueprint Upload
Frequently Asked Questions
What is the optimal range for Testosterone/Estradiol Ratio?
No universal optimal established: Assay- and context-dependent; the absolute levels of each hormone matter more than the ratio. No established lab reference range.
Which blood test providers include Testosterone/Estradiol Ratio?
1 of the 21 blood testing panels we itemize marker by marker include Testosterone/Estradiol Ratio in their panels. This biomarker has limited availability.
Medical Disclaimer
This information is for educational purposes only and is not medical advice. Always consult with a qualified healthcare provider about your specific health needs.
Last reviewed Sep 23, 2026 · First published Sep 30, 2025