An ADAM study refers to the Androgen Deficiency in the Aging Male questionnaire, a 10-question screening tool designed to flag possible low testosterone in men. Developed by Dr. John Morley at Saint Louis University and widely used since 2000, the ADAM questionnaire asks about common symptoms of declining testosterone levels. It’s not a diagnosis on its own but rather a quick first step that helps determine whether blood testing is warranted.
What the ADAM Questionnaire Asks
The ADAM questionnaire covers three broad areas: energy, mood, and sexual function. The full list of questions is:
- Do you have a decrease in libido (sex drive)?
- Do you have a lack of energy?
- Do you have a decrease in strength or endurance?
- Have you lost height?
- Have you noticed a decreased enjoyment of life?
- Are you sad or grumpy?
- Are your erections less strong?
- Have you noticed a recent deterioration in your ability to play sports?
- Are you falling asleep after dinner?
- Has there been a recent deterioration in your work performance?
Every question is answered with a simple yes or no. There are no scales or degrees, just whether you’ve noticed each symptom.
How Scoring Works
Not all 10 questions carry equal weight. The two questions about sexual function (decreased sex drive and weaker erections) are treated as especially important. The screen is considered positive if you answer “yes” to either of those two sexual function questions, or if you answer “yes” to any three of the remaining eight questions.
Research supports that emphasis on the sexual symptoms. In studies comparing men with low and normal free testosterone, the most statistically meaningful differences showed up on the questions about libido, erectile strength, loss of height, and work performance. Weaker erections, specifically, was the single item most frequently reported by men who turned out to have confirmed low testosterone on blood work.
How Accurate the ADAM Questionnaire Is
The ADAM questionnaire is good at catching men who do have low testosterone. Its sensitivity (the ability to correctly identify someone with the condition) runs around 88% in validation studies. The problem is specificity: only about 32% of the time does a negative result reliably rule men out. That means a large number of men who screen positive on the ADAM will turn out to have normal testosterone levels when their blood is actually tested.
The reason for this high false-positive rate is straightforward. Most of the symptoms on the questionnaire, like low energy, decreased strength, falling asleep after dinner, and reduced sports performance, can be caused by depression, poor sleep, thyroid problems, or simply aging itself. These questions had individual specificity rates as low as 35% to 54%, meaning they frequently flag men whose symptoms have nothing to do with testosterone.
A comparison study in middle-aged Taiwanese men found the ADAM questionnaire had 66.7% sensitivity and just 25.6% specificity for detecting androgen deficiency (defined as total testosterone below 300 ng/dL combined with low free testosterone). Another common screening tool, the Aging Males’ Symptoms (AMS) scale, performed similarly: 57.4% sensitivity and 48.1% specificity. Neither tool was considered reliable enough on its own.
How Doctors Actually Use It
The ADAM questionnaire was designed as a conversation starter, not a standalone diagnostic. A positive result means “consider getting blood work,” not “you have low testosterone.” The actual diagnosis requires measuring total testosterone through a blood test, typically drawn in the morning when levels are at their peak.
The American Urological Association’s current guidelines make this explicit. Their conditional recommendation states that validated questionnaires like the ADAM should not be used to define which patients are candidates for testosterone therapy or to monitor treatment response. The guidelines note that specificities and sensitivities vary too much across available questionnaires, making them a poor substitute for a full evaluation and laboratory testing.
In practice, the ADAM questionnaire is most useful for men who are unsure whether their symptoms are worth bringing up with a doctor. If you score positive, it’s a reasonable prompt to request a testosterone level check. If you score negative, low testosterone is less likely to be the explanation for your symptoms, though it’s not completely ruled out.
ADAM vs. Other Screening Tools
The ADAM questionnaire isn’t the only option. The Aging Males’ Symptoms (AMS) scale is another widely used tool that takes a more detailed approach, using graded severity ratings rather than simple yes/no answers. A newer variation called the quantitative ADAM (qADAM) attempts to improve on the original by scoring symptom severity on a scale, which gives clinicians a better sense of how much symptoms are affecting daily life.
None of these questionnaires perform well enough to replace blood testing. Their value lies in helping men recognize a pattern of symptoms they might otherwise dismiss individually. Fatigue alone might not prompt a doctor visit, but fatigue combined with reduced sex drive, weaker erections, and declining work performance starts to paint a clearer picture worth investigating.