My Testosterone Levels
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Understand your testosterone level.

Add your lab numbers and how you feel. You'll see whether your level counts as low by the American Urological Association definition, the most likely reasons it's low, and what you can do about it. Bring the summary to your own doctor.

Showing an example: a 52-year-old man with two low morning levels. Clear it to enter your own.

Your lab report

Optional. Add your report and we fill in the numbers we recognize, so you can check them. Works with Quest, LabCorp and portal PDFs, scans and photos.

Is it low?

Testosterone peaks in the morning and swings day to day. Low testosterone is diagnosed from two separate early-morning tests below 300 ng/dL, plus symptoms.

Start here
Were your blood draws done before 10 AM?

Free testosterone

Free testosterone is the part not bound to SHBG. It matters most when total testosterone is borderline, or when SHBG is unusually high or low. Add SHBG and we'll calculate it.

How you feel

Choose any you've noticed. Low numbers without symptoms usually don't need treatment.

Why might it be low?

LH is the pituitary hormone that tells the testicles to make testosterone. It separates a testicle problem from a signaling problem. Add whatever you have.

Anything that applies

Your plans

Testosterone therapy shuts down sperm production. Your plans for children change which treatments make sense.

Do you want children in the future?
Learn more

Testosterone, explained

Ways to raise testosterone without medication

These work best when something is pulling your level down. They help your whole health either way.

  • Lose weight if you carry extra. Fat tissue lowers testosterone. Losing 5 to 10% of body weight often raises it meaningfully, and larger weight loss can restore it.
  • Sleep 7 to 9 hours. Most testosterone is made during sleep. A week of short sleep can drop levels noticeably.
  • Get checked for sleep apnea if you snore, stop breathing at night or wake unrefreshed. Treating it helps energy and heart health.
  • Lift weights 2 to 3 times a week and stay active most days.
  • Cut back on alcohol and avoid marijuana and nicotine.
  • Review your medicines. Opioids, steroid pills and some others lower testosterone. Don't stop anything on your own; ask the prescriber about options.
  • Control blood sugar if you have diabetes.
Do "testosterone boosters" work?

Most over-the-counter boosters haven't been shown to raise testosterone in men with true deficiency. Studies are small and short, and supplements aren't checked for purity before sale. Some products have been found to contain hidden steroids.

Vitamin D and zinc only help if you're low in them. Ashwagandha has a few small trials with modest effects and rare reports of liver injury. Tribulus and D-aspartic acid don't consistently work. See the table in your plan for details.

Primary vs. secondary low testosterone

Primary means the testicles can't make enough, even though the brain is asking loudly. LH is high. Causes include Klinefelter syndrome, past chemotherapy or radiation, injury and undescended testicles.

Secondary means the signal from the brain is weak, so LH is low or normal. This is the most common pattern and is often driven by weight, sleep apnea, opioids, steroid pills or past steroid use. Less often it's a pituitary problem, which is why prolactin is checked.

Secondary low T can sometimes be reversed by fixing the cause, and it can be treated with pills or shots that keep fertility intact.

Testosterone therapy and fertility

Testosterone from outside the body tells the brain to stop sending LH and FSH. Sperm production falls, often to zero, within months. It usually recovers after stopping, but it can take a year or more and doesn't always fully return.

If you want children now or later, ask about clomiphene, hCG or anastrozole, which raise your own testosterone and keep sperm production going.

Is testosterone therapy safe for my heart and prostate?

The TRAVERSE trial followed over 5,000 men with low testosterone and heart risk factors and found no increase in heart attack or stroke. In February 2025 the FDA removed the boxed heart warning from testosterone labels and added a blood pressure warning.

In June 2026 the FDA asked makers to update labels again: removing the limitation on use for age-related low testosterone, limiting the prostate cancer contraindication to metastatic disease and removing the warning about worsening enlarged prostate symptoms.

Monitoring still matters. Testosterone raises red blood cell count, and PSA should be checked before and during treatment.

Getting an accurate test
  • Draw blood before 10 AM, ideally fasting.
  • Repeat on a different day before deciding anything. One low result is often normal the second time.
  • Avoid testing during an acute illness or right after a very poor night's sleep.
  • If you're on testosterone, the timing depends on the type: right before the next shot for injections, a few hours after applying gel.
How results are calculated

For use with your own doctor

My Testosterone Levels follows the American Urological Association guideline on testosterone deficiency and current FDA labeling. It explains your results; it doesn't diagnose or prescribe. Reference ranges vary by lab, so your report's own ranges take priority. Not affiliated with any one practice.

Checking a PSA too? Try mypsalevel.

  1. Mulhall JP, Trost LW, Brannigan RE, et al. Evaluation and Management of Testosterone Deficiency: AUA Guideline. J Urol 2018;200:423. Reviewed and validity confirmed 2024.
  2. Lincoff AM, et al. Cardiovascular Safety of Testosterone-Replacement Therapy (TRAVERSE). N Engl J Med 2023;389:107.
  3. FDA. Class-wide labeling changes for testosterone products, February 2025.
  4. HHS/FDA. Requested updates to testosterone therapy labeling, June 18, 2026.
  5. Vermeulen A, Verdonck L, Kaufman JM. A critical evaluation of simple methods for the estimation of free testosterone in serum. J Clin Endocrinol Metab 1999;84:3666.