Hormones

Testosterone, total

Updated 2026-10-14Written for education by the Zenlo Health editorial teamHow we review
Quick answerA total testosterone test measures the main male sex hormone in your blood. Guidelines suggest confirming a low result with a second early-morning test before diagnosing low testosterone.
Fasting and prepTest between 7 and 10 a.m., usually fasting. Avoid testing while sick or after a night of poor sleep.
Typical turnaroundUsually 1 to 3 days.
Also calledtestosterone test, low t test

What it measures

Testosterone peaks in the morning and varies from day to day. Sleep loss, illness, obesity, and some medicines lower it. Symptoms such as low libido, poor erections, low energy, and mood changes fit low testosterone but also fit many other conditions.

Who should consider it

  • Men with symptoms that fit low testosterone
  • Men with obesity, type 2 diabetes, or long-term opioid use
  • Anyone monitoring a treatment their own clinician prescribed

How to read your result

  • Many labs list roughly 264 to 916 ng/dL for adult men. Ranges vary.
  • The American Urological Association uses a total level below 300 ng/dL, with symptoms, as consistent with low testosterone.
  • Confirm a low result with a repeat early-morning test, and consider LH, FSH, and prolactin.

Reference ranges differ between labs. Use the range printed on your own report.

What to do next

Treatment affects fertility, red blood cell counts, and heart and prostate health. Discuss it with a clinician before starting anything.

Where to order Testosterone, total

These sellers include an independent physician order. You pay online and visit a partner lab. Availability, price, and lab network vary, so confirm at checkout.

Private MD Labs

Online lab seller
  • Says 4,500+ Quest and Labcorp locations
  • Every order reviewed by a physician. Says you pay $1 to start and the rest after results.
  • Secure online portal with plain-English explanations. Says many results arrive overnight.
Visit site Read review

HealthLabs

Online lab seller
  • Says 4,500+ labs, including Quest and Labcorp
  • Online or by phone. No doctor referral or insurance needed.
  • Secure HealthLabs account. Says 1 to 3 business days.
Visit site Read review

Walk-In Lab

Online lab seller
  • Lab network not named on its homepage
  • Online, no insurance or doctor order needed. Shows a $6 physician fee per order on popular tests.
  • Online account. Turnaround not stated on its homepage.
Visit site Read review

Quest Health

Lab-run
  • Quest, 2,000+ locations
  • Buy online and book a Quest appointment. An independent provider is involved.
  • Online as soon as ready, with an email alert. Provider discussion included at no extra cost.
Visit site Read review

Seller details come from each seller's own site and can change. Confirm price, lab location, and state availability at checkout.

Questions people ask

What time of day should I test testosterone?

Early morning, between about 7 and 10 a.m., when levels run highest.

Does a low result mean I need testosterone treatment?

Not by itself. Treatment depends on symptoms, repeat testing, and your health. Talk with a clinician first.

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