Low testosterone · Telehealth for men · Canada & USA
When should you get checked for low testosterone?
Testing is most useful when sexual symptoms show up with fatigue, body changes or mood shifts — not from vague tiredness alone. Low testosterone is confirmed when those symptoms line up with two fasting, early-morning total testosterone tests. Illness, opioids, short sleep and weight can temporarily lower levels, so those get checked alongside the labs. We go through your symptoms and results by telehealth and build a sleep, training, nutrition and stress plan for men in Canada and the USA.
Part of our low testosterone and andropause guide for men in Canada and the USA.
Symptom clusters that make testing useful
The clearest cue is a cluster, not a single vague complaint. In the European Male Ageing Study (Wu and colleagues, New England Journal of Medicine, 2010), researchers surveyed 3,369 men aged 40 to 79 and found that the three sexual symptoms — poor morning erections, low sexual desire and erectile dysfunction — had the strongest link with lower testosterone. Fatigue, low mood and less capacity for vigorous activity were related too, but less specifically. The Endocrine Society (2018) groups the more suggestive signs as sexual (reduced desire and spontaneous erections), physical (less energy and muscle, more body fat, lower bone density) and mood or thinking (low mood, poor concentration, sleep problems). The Canadian Urological Association (2021) uses a similar three-way list. Isolated tiredness is common and usually has other drivers; see the full picture in low testosterone symptoms in men.
Sexual changes lead
Lower sex drive, fewer morning erections and erectile dysfunction are the symptoms most tied to low T.
Energy and body
Fatigue, less muscle or strength and more belly fat strengthen the case when they sit with sexual changes.
Mood and focus
Low mood, irritability, poor concentration and sleep problems often travel with the cluster.
Tiredness alone is weak
Guidelines call low-T symptoms non-specific. Isolated fatigue is a reason to look closer, not a diagnosis.
Why two early-morning fasting tests
Low testosterone is not diagnosed from one blood draw. The Endocrine Society recommends measuring fasting morning total testosterone with an accurate assay, then repeating it to confirm, because testosterone peaks in the morning, food and glucose suppress it, and levels swing from day to day. In that guideline, about three in ten men whose first result looked low had a normal result on repeat. The American Urological Association defines testosterone deficiency as symptoms plus a total testosterone below 300 ng/dL on two early-morning measurements. The Canadian Urological Association recommends a morning draw between 7 and 11 a.m. and suggests below 10 nmol/L as a reasonable threshold, while noting that some men have symptoms at higher levels. Timing and a second sample are what make the number trustworthy.
Fasting, early morning
Testosterone peaks in the morning and food lowers it, so guidelines want a fasting AM draw.
Always repeat
About three in ten first low results are normal on a second early-morning test.
Guideline cut-offs
AUA: below 300 ng/dL on two tests. CUA: morning 7 to 11 a.m., below 10 nmol/L as a reasonable threshold.
Symptoms still matter
A number without matching symptoms is not a diagnosis. Guidelines require both.
What can temporarily lower testosterone
A low reading does not always mean a stable problem. The Endocrine Society notes that testosterone is affected by acute illness, nutritional deficiency, opioids, glucocorticoids, age, obesity, diabetes and sleep apnea. The Canadian Urological Association lists potentially correctable causes to address first: acute illness, obesity, opioids and glucocorticoids, extreme nutritional deficiency, extreme exercise, sleep apnea, high prolactin, hemochromatosis and pituitary disorders. Short or broken sleep also pulls levels down. Checking these alongside the labs matters, because a draw during a flu, a stretch of bad nights or while taking opioids may not show your usual baseline. Weight, sleep and stress can also shift testosterone over months; see low T from aging or from weight, sleep and stress.
Illness and medications
Acute illness, opioids and glucocorticoids such as prednisone can suppress testosterone.
Sleep and sleep apnea
Short sleep and untreated sleep apnea go with lower levels and overlap with low-T symptoms.
Weight and diabetes
Obesity and type 2 diabetes are common drivers; weight change moves testosterone with it.
Extreme diet or training
Crash dieting and overtraining are listed Canadian causes to correct before treating the number alone.
When total T is borderline: free T, SHBG and LH
Not every useful result sits clearly below the cut-off. When total testosterone is near the lower limit, or when something may change SHBG (the protein that binds testosterone in the blood), the Endocrine Society recommends checking free testosterone by equilibrium dialysis or a validated calculation. Aging, obesity and some medications shift SHBG, so free T can tell a different story than total T. LH then helps classify the pattern: high LH points toward the testes; low or low-normal LH points toward the brain’s signal, and that is when prolactin may be checked. The Canadian Urological Association likewise uses calculated free or bioavailable testosterone for equivocal totals. Full panel detail is in low testosterone labs to ask for.
Free testosterone
Useful when total T is near the cut-off or SHBG is likely altered.
SHBG
Shows how much testosterone is bound. Aging and weight both change it.
LH
Separates primary (testes) from secondary (brain signal) patterns.
Then the wider panel
Metabolic markers, thyroid and the rest of the list explain energy and weight.
What Odin does next
Odin Health Labs is telehealth for men in Canada and the USA with andropause and low testosterone symptoms. On a free call we map your symptom cluster, the temporary lowers above and which labs you already have. Then we review your two early-morning total testosterone results, free T, SHBG, LH and the metabolic markers that affect energy and weight, in plain language. From there we build a written plan around sleep, training, nutrition and stress, with follow-up check-ins and repeat labs so you can see what is changing. If you are weighing testosterone therapy against fixing causes first, read TRT or fix the causes first. See how our health coaching works day to day.
Telehealth consults
Video or phone, anywhere in Canada or the USA, at a time that fits your week.
Labs review
Your symptoms read alongside total and free T, SHBG, LH and metabolic markers.
Coaching
Sleep, training, nutrition and stress steps matched to your real schedule.
A written plan
Clear weekly actions, check-ins and repeat labs. See supplements for targeted support.
From questions to a plan
Here is how we work with you, start to finish.
- Step 1
Map the cluster
We go through your sexual, energy, body and mood symptoms, sleep, stress, training, weight and medications on a free call.
- Step 2
Get the right labs
Two early-morning total testosterone results, free T, SHBG, LH and the markers that explain the pattern.
- Step 3
Tune the levers
Sleep, training, nutrition and stress steps set up around your real week, including any temporary lowers.
- Step 4
Track and adjust
Regular check-ins and repeat labs show what is shifting, and we adjust the plan with you.
Sources
- Bhasin S, Brito JP, Cunningham GR, et al. Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab 2018;103(5):1715–1744. doi.org/10.1210/jc.2018-00229
- Mulhall JP, Trost LW, Brannigan RE, et al. Evaluation and Management of Testosterone Deficiency: AUA Guideline (2018). American Urological Association. auanet.org testosterone deficiency guideline
- Grober ED, Krakowsky Y, Khera M, et al. Canadian Urological Association guideline on testosterone deficiency in men: Evidence-based Q&A. Can Urol Assoc J 2021;15(5):E234–E243. doi.org/10.5489/cuaj.7252
- Wu FC, Tajar A, Beynon JM, et al; EMAS Group. Identification of late-onset hypogonadism in middle-aged and elderly men. N Engl J Med 2010;363(2):123–135. doi.org/10.1056/NEJMoa0911101
- NHS. The “male menopause”. nhs.uk male menopause
More common questions
Once you have your results, these are the questions men often ask next. Each short answer links to the full guide.
See all common questionsReading your results
How do I convert ng/dL to nmol/L?
Divide ng/dL by 28.84 to get nmol/L. The calculator also estimates free T from total T, SHBG and albumin.
Open the calculatorFree vs total testosterone: what’s the difference?
Total T counts all the testosterone in your blood. Free T is the 2 to 4 percent that isn’t bound to SHBG or albumin.
Read the full answerHabits & treatment
Can I raise testosterone naturally?
The best evidence is for losing extra body fat, sleeping enough and staying active. Most “booster” ingredients have little human evidence.
Read the full answerHow does sleep affect testosterone?
Testosterone rises while you sleep, so short, broken or badly timed sleep can pull it down.
Read the full answerWhat are the side effects of TRT?
The most common is a rise in red blood cells (hematocrit). Acne, a small PSA rise and lower sperm production are also linked, and most show up early on labs.
Read the full answerDoes testosterone cause hair loss?
Pattern hair loss comes from DHT acting on scalp follicles your genes make sensitive, not from your blood testosterone level.
Read the full answerFrequently asked questions
When is it worth getting checked for low testosterone?
Testing is most useful when sexual symptoms (lower sex drive, fewer morning erections or erectile dysfunction) show up together with fatigue, less muscle or more belly fat, or low mood and poor focus. In the European Male Ageing Study of 3,369 men aged 40 to 79, the three sexual symptoms had the clearest link with low testosterone. The Endocrine Society (2018) and the Canadian Urological Association (2021) both diagnose low T from symptoms plus consistently low lab results, not from a single vague complaint.
Is vague tiredness alone a reason to test?
Tiredness on its own is a weak signal. The American Urological Association notes that symptoms linked to low testosterone are very non-specific and can come from chronic fatigue, chronic stress or a depressed state. The Canadian Urological Association recommends ruling out overlapping conditions such as depression, an underactive thyroid and sleep disorders. Isolated fatigue is still worth looking into, but a symptom cluster that includes sexual changes is a clearer cue to check testosterone.
Why two early-morning tests instead of one?
Testosterone peaks in the morning and food lowers it, and levels swing from day to day. The Endocrine Society recommends fasting morning total testosterone as the first test and a repeat to confirm; in that guideline, about three in ten men whose first result looked low had a normal result on repeat. The American Urological Association uses a total testosterone below 300 ng/dL on two early-morning tests. The Canadian Urological Association recommends a morning draw between 7 and 11 a.m. and suggests below 10 nmol/L as a reasonable threshold.
What can temporarily lower testosterone?
The Endocrine Society and the Canadian Urological Association list causes that suppress testosterone and should be checked alongside the labs: acute illness, opioids and glucocorticoids, nutritional deficiency, obesity, diabetes, sleep apnea and short or broken sleep. Extreme exercise and extreme dieting are also on the Canadian list. Sorting those out matters because a low result during illness or a short stretch of bad sleep may not reflect your usual baseline.
What happens after the labs?
When total testosterone is borderline, or when something may change SHBG (the protein that carries testosterone), the Endocrine Society recommends checking free testosterone. LH helps classify whether the issue is in the testes (high LH) or the brain’s signal (low or normal LH). We go through your symptoms and results with you by telehealth, then build a sleep, training, nutrition and stress plan with follow-up check-ins and repeat labs. See which labs to ask for.
How does Odin Health Labs work with my doctor?
Odin Health Labs is a telehealth service for men in Canada and the USA with low testosterone (andropause) symptoms. We work alongside your own doctor: we go through your symptoms and lab results with you, build your sleep, training, nutrition and stress plan, and track your progress with follow-up check-ins and repeat labs. We can share your symptom list, plan and results with your doctor if you choose. See our low testosterone overview and our Privacy Policy.
Ready to check where you stand?
A free call is the first step: we map your symptom cluster, plan the right morning labs and set up sleep, training, nutrition and stress steps with you.