Do I Have Low Testosterone? Free Screening Quiz (ADAM Test)
The ADAM (Androgen Deficiency in the Aging Male) questionnaire is a validated clinical screening tool. Answer 10 yes/no questions to see if your symptoms are consistent with low testosterone. This takes about 60 seconds.
1.Do you have a decrease in libido (sex drive)?
2.Do you have a lack of energy?
3.Do you have a decrease in strength and/or endurance?
4.Have you lost height?
5.Have you noticed a decreased "enjoyment of life"?
6.Are you sad and/or grumpy?
7.Are your erections less strong?
8.Have you noticed a recent deterioration in your ability to play sports?
9.Are you falling asleep after dinner?
10.Has there been a recent deterioration in your work performance?
Answer all 10 questions to see your result
What Is the ADAM Questionnaire?
The ADAM (Androgen Deficiency in the Aging Male) questionnaire is a validated clinical screening tool developed by researchers at Saint Louis University. It's used by healthcare providers as a quick initial assessment for symptoms of low testosterone.
The questionnaire has an 88% sensitivity rate, meaning it correctly identifies most men with low testosterone. However, its specificity is around 60%, which means some men will screen positive even with normal testosterone levels. That's why this is a screening tool, not a diagnosis. A positive result means "get your blood tested," not "you definitely have low T."
Normal Testosterone Levels by Age
| Age Range | Low (ng/dL) | Normal Range (ng/dL) | Optimal Range (ng/dL) |
|---|---|---|---|
| 20-29 | Below 264 | 264 – 916 | 500 – 916 |
| 30-39 | Below 252 | 252 – 916 | 450 – 916 |
| 40-49 | Below 237 | 237 – 870 | 400 – 870 |
| 50-59 | Below 215 | 215 – 794 | 350 – 794 |
| 60+ | Below 196 | 196 – 740 | 300 – 740 |
These ranges are based on morning, fasting blood draws. Testosterone levels fluctuate throughout the day and are highest in the morning. A level drawn at 3pm after a meal will be significantly lower than one drawn at 8am fasted. This is why most guidelines require two separate morning draws before diagnosing hypogonadism.
"Normal" range doesn't mean "optimal." A 35-year-old with a total testosterone of 280 ng/dL is technically in range but at the very bottom. Many men with symptoms experience significant improvement when levels are optimized to the upper portion of the normal range.
What Blood Work Should You Get?
If your ADAM screening is positive or you have ongoing symptoms, ask your doctor for these tests:
| Test | Why It Matters |
|---|---|
| Total Testosterone | Your primary number. Needs to be drawn in the morning, fasting. |
| Free Testosterone | The portion your body can actually use. Some men have normal total T but low free T. |
| SHBG | Binds to testosterone, making it unavailable. High SHBG can cause low free T even with normal total T. |
| LH | Tells you whether the problem is in your brain (secondary) or testes (primary). High LH + low T = primary. Low LH + low T = secondary. |
| FSH | Works alongside LH. Important for fertility assessment. |
| Estradiol (E2) | Elevated estrogen can suppress testosterone and cause overlapping symptoms. |
| CBC | Baseline before starting any treatment. Includes hematocrit, which TRT can elevate. |
| Comprehensive Metabolic Panel | Liver and kidney function baseline. |
| Thyroid Panel (TSH, Free T4) | Thyroid dysfunction mimics many low T symptoms. Rule it out. |
| Prolactin | Elevated prolactin can suppress testosterone. Usually only checked if levels are very low. |
For a deeper dive, check our complete TRT Blood Work Guide.
If Your Doctor Prescribes TRT
Starting testosterone replacement therapy can feel overwhelming. The most important things to know:
- It takes 4-8 weeks to feel the initial effects and 3-6 months for full body composition changes
- You'll need regular blood work (every 3-6 months) to monitor your levels and safety markers
- Injection frequency matters — many men do better on more frequent, smaller doses (daily or every-other-day) rather than large weekly injections
For a detailed walkthrough of what to expect, read our First TRT Injection Guide. You can calculate your optimal dose using our TRT Dose Calculator.
Related Resources
- Free Testosterone Calculator — calculate free T from your lab results
- TRT Blood Work Guide — what labs to get and when
- TRT Side Effects Management Guide — what to watch for on therapy
- TRT Dose Calculator — calculate injection volumes
- First TRT Injection: What to Expect
Medical Disclaimer
This screening tool is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. The ADAM questionnaire is a screening instrument, not a diagnostic test. Only a qualified healthcare provider can diagnose low testosterone through appropriate clinical evaluation and laboratory testing. If you are experiencing symptoms of low testosterone, please consult your doctor.
Frequently Asked Questions
- Built-in dose calculators
- Smart injection reminders
- Track progress over time
- Private, secure health data
Related Tools
Free Testosterone Calculator
Calculate free and bioavailable testosterone from your lab results.
TRT Dose Calculator
Calculate injection volume for testosterone cypionate and enanthate.
Half-Life Visualizer
See testosterone blood level curves between injections.
Split Dose Calculator
Divide your weekly TRT dose into optimal injection frequencies.
For educational and research purposes only. This calculator provides estimates based on standard formulas.
Always verify calculations with your healthcare provider before use. We assume no liability for dosing errors, adverse events, or outcomes resulting from use of this tool.