The WeightGain blood testing box

Blood testing.

Symptoms alone can’t show your hormone levels. A blood test measures them, so a clinician can read them in context.

4,500+ certified lab locations across the US

Join the blood testing waitlistSee the tests

Email updates only. Testing is not available yet.

Blood testing through our lab partner’s network of certified locations.

Illustration. Points show where the network’s locations cluster, not exact lab sites.

TRT.

Testosterone replacement therapy, for confirmed low testosterone after a clinician’s evaluation.

Join the waitlistBlood testing

Coming soon. Email updates only.

Total testosterone

260 ng/dL

A result of 260 ng/dL reads normal at one lab and low at another.
The WeightGain TRT vial

Evaluation comes first.

Decisions about TRT happen after careful evaluation, not from symptoms alone.

One test, different normals.

The total testosterone ranges three large US labs publish for adult men. A result of 260 ng/dL reads normal at one lab and low at another, one reason results are read in context, not alone.

  • LabCorpAll adults · 2017264 to 916 ng/dL
  • QuestAll adults · 2021250 to 1,100 ng/dL
  • ARUPAges 18 to 39 · 2026300 to 1,080 ng/dL
  • ARUPAges 40 to 59 · 2026300 to 890 ng/dL
  • ARUPAges 60 and older · 2026300 to 720 ng/dL
  • LabCorpBefore July 2017 (retired)348 to 1,197 ng/dL, retired
Total testosterone, ng/dL. The guideline lines are the Endocrine Society’s 264 and the American Urological Association’s 300, each read with symptoms and repeat morning tests. For education only; not a diagnosis.Sources: LabCorp, 2017 · Quest Diagnostics, 2021 · ARUP Laboratories · Endocrine Society, 2018 · AUA Guideline, 2018Lab names identify the published source of each range. WeightGain is not affiliated with, sponsored by or endorsed by these laboratories, the Endocrine Society or the American Urological Association. Reference ranges change; these are as published and may since have been updated.

Questions to bring to a clinician.

Ask what each lab can and cannot show, whether a repeat morning test is needed, what conditions should be ruled out first, and how fertility, cardiovascular risk, sleep apnea, and other factors affect next steps.

Questions about TRT.

When will TRT launch?

No launch day is set yet. People on the list get an email the day we open.

What happens after I join?

Use the link in our email to confirm your address, and we'll email you launch updates. Joining is free and doesn't commit you to care or a purchase. You can unsubscribe at any time.

Does joining give me access to care?

Joining is for email updates only. It is separate from clinical intake, diagnosis, prescribing, and medication access.

Is my information private?

The form asks only for your email. Never medical records, lab results, or payment details. We also log basic visit data. See our privacy policy for details.

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Can I join from outside the US?

Yes. Adults 18 and over can join for email updates from outside the US. Planned care and products are US only, subject to state and individual eligibility. Joining does not establish eligibility.

Read before you start.

Endocrine Society · Testosterone therapy guideline

What’s true today.

  • Nothing on this site is for sale today.
  • Testing is not available yet.
  • No launch day is set yet.
  • The waitlist makes no eligibility, diagnosis, treatment, prescribing, or medication access decisions.
  • A clinical team is assembling. Names will be published when confirmed. No clinician is listed before then.