Male Testosterone Level Assessment Tool
Estimate low-T risk based on BMI, age, and the clinical ADAM questionnaire. Displays reference ranges and risk probability.
1. Anthropometrics
2. ADAM Questionnaire
About
Testosterone is the primary male sex hormone, crucial for muscle mass, bone density, and metabolic health. Levels naturally decline with age, a condition known as hypogonadism when symptomatic. However, diagnosis is complex and involves overlapping factors such as visceral fat, stress, and age-related physiological changes.
This tool serves as a preliminary screener using the ADAM (Androgen Deficiency in the Aging Male) protocol. It combines anthropometric data (BMI) with clinical symptom markers to estimate the statistical probability of deficiency. While it does not analyze blood chemistry, it highlights risk factors that warrant clinical investigation. This tool is private; data is processed locally and never stored.
Formulas
The Risk Assessment Score utilizes a weighted summation of the ADAM questionnaire and physiological markers.
ADAM Criteria: Deficiency is suspected if:
BMI Impact: Increased adipose tissue converts testosterone to estradiol via aromatase. Risk increases significantly if BMI > 30.
Reference Data
| Age Group | Normal Total Testosterone Range (ng/dL) | Free Testosterone (pg/mL) | Clinical Note |
|---|---|---|---|
| 20 - 29 years | 400 - 1080 | 9.3 - 26.5 | Peak physiological production window. |
| 30 - 39 years | 350 - 950 | 8.7 - 25.1 | Gradual decline begins (approx. 1% per year). |
| 40 - 49 years | 300 - 850 | 6.8 - 21.5 | Symptoms of Andropause may start appearing. |
| 50 - 59 years | 250 - 750 | 5.4 - 19.4 | Common onset of ED or reduced libido. |
| 60+ years | 200 - 700 | 4.8 - 18.0 | Wide variance; health status highly impactful. |