Getting a testosterone prescription requires documented low levels on blood work plus symptoms that affect your daily life. Doctors use a total testosterone cutoff below 300 ng/dL as the standard threshold for diagnosis, based on American Urological Association guidelines. The process typically involves two separate blood draws, a symptom evaluation, and ruling out conditions that could make treatment unsafe.
Symptoms That Qualify You for Testing
Doctors distinguish between symptoms that strongly suggest low testosterone and those that could point to other causes. The symptoms most likely to prompt testing include reduced sex drive, fewer spontaneous erections, fatigue, hot flashes, loss of body hair, shrinking testicle size, and infertility. These are considered hallmark signs of testosterone deficiency.
A second group of symptoms is associated with low testosterone but overlaps with other conditions like depression, thyroid problems, or poor sleep. These include depressed mood, irritability, difficulty concentrating, increased body fat, lower muscle mass, reduced physical endurance, and low energy. Having several symptoms from both groups strengthens the case for testing, but your doctor will likely want to rule out other explanations before jumping to a testosterone diagnosis.
What Happens During the Blood Test
Testosterone levels fluctuate throughout the day and peak in the early morning. Your blood draw needs to happen between 7 and 10 a.m. to capture your highest natural level. In some cases, your doctor will ask you to fast beforehand. The most common test ordered is a total testosterone test, which measures both the testosterone circulating freely in your blood and the portion bound to proteins. If results are borderline or your doctor suspects a specific condition, they may also order a free testosterone test, which measures only the unattached, active form.
Here’s the part many people don’t expect: one low reading isn’t enough. Insurance companies and clinical guidelines both require at least two confirmed low morning testosterone levels before a prescription is issued. This means two separate blood draws on two different days. Testosterone can dip temporarily from poor sleep, illness, stress, or certain medications, so the repeat test confirms the deficiency is persistent rather than a one-time fluctuation.
The 300 ng/dL Threshold
The American Urological Association sets 300 ng/dL as the cutoff for diagnosing low testosterone. If both of your morning blood draws come back below this number and you have symptoms, you meet the clinical criteria for treatment. Some men fall in a gray zone, landing between 250 and 350 ng/dL, where the decision depends more heavily on symptom severity and how your doctor interprets the results.
Labs sometimes use their own reference ranges, which can differ slightly from the AUA cutoff. Your results might say “normal” on the lab report but still fall below 300. It’s worth knowing the actual number rather than relying on the lab’s interpretation alone.
Which Doctor to See
You don’t necessarily need a specialist. Many primary care physicians prescribe and manage testosterone therapy, and starting with your PCP is the fastest route to getting blood work ordered. If your PCP isn’t comfortable managing hormone therapy or your case is complicated, the next step is usually an endocrinologist, specifically one who handles male hormonal issues. Urologists also prescribe testosterone, though some urology practices have moved away from managing ongoing therapy and focus more on related conditions like prostate health or fertility.
Specialty men’s health clinics have become increasingly common. These clinics focus specifically on testosterone therapy and often streamline the process, but they may not accept insurance and can charge premium prices for monitoring and medication. If you go this route, verify the clinic employs licensed physicians and follows standard diagnostic criteria rather than prescribing based on symptoms alone.
Conditions That Can Block a Prescription
Even with confirmed low levels and clear symptoms, certain medical situations will prevent a doctor from prescribing testosterone. These include:
- Active or past prostate or breast cancer: Testosterone can fuel the growth of hormone-sensitive cancers.
- Uncontrolled heart failure: Or a heart attack or stroke within the past six months.
- Elevated red blood cell count: A hematocrit above 50% increases clotting risk, and testosterone raises it further.
- Untreated obstructive sleep apnea: This condition itself can suppress testosterone, so treating the apnea sometimes resolves the deficiency.
- Plans to have children: Testosterone therapy suppresses sperm production, sometimes to zero. If fertility matters to you now or in the near future, your doctor will likely recommend alternative treatments that stimulate your body’s own testosterone production without shutting down sperm.
- Undiagnosed prostate abnormalities: An elevated PSA level above 4 ng/mL or a suspicious finding on prostate exam requires further evaluation before starting therapy.
Forms of Testosterone Available
FDA-approved options include injections, topical gels, transdermal patches, and a buccal system that adheres to your upper gum. Each has trade-offs your doctor will walk through based on your lifestyle and preferences.
Injections are the most widely prescribed form. They’re typically given once a week or every two weeks, either at a clinic or self-administered at home after training. Injections tend to produce more significant peaks and valleys in testosterone levels between doses, though weekly dosing smooths this out compared to biweekly.
Topical gels are applied daily to the shoulders or upper arms and deliver a steadier level of testosterone throughout the day. The main drawback is transfer risk: if someone else touches the application site before it dries, they can absorb the hormone. This is a particular concern in households with children or pregnant partners. Patches work similarly but can cause skin irritation at the application site. The buccal system, a small tablet placed against the gum, is less commonly used but avoids both injection and skin transfer concerns.
Getting Insurance to Cover It
Testosterone is a Schedule III controlled substance under federal law, which adds layers to the prescribing and refill process. Prescriptions are limited to five refills within six months from the date they’re written. After that, you need a new prescription.
Most insurance plans cover testosterone therapy for documented hypogonadism but require prior authorization. This means your doctor’s office submits evidence, typically your two low blood test results and clinical notes, to the insurance company before the prescription is approved. Plans specifically exclude coverage for performance enhancement or anti-aging purposes. If you have a confirmed diagnosis with lab work below the reference range, prior authorization is usually straightforward, though it can take a few days to a couple of weeks to process.
Without insurance, costs vary widely. Injectable testosterone is generally the least expensive option, while gels and patches cost more. Specialty clinic pricing often bundles the medication with monitoring visits and lab work into a monthly fee.
What Monitoring Looks Like Long-Term
Testosterone therapy isn’t a one-time prescription. Once you start, you’ll have a follow-up visit between 3 and 12 months to check whether your symptoms have improved and whether you’re experiencing side effects. After that initial period, monitoring moves to an annual schedule for most men.
Blood work at each check includes testosterone levels to confirm you’re in the target range and hematocrit to watch for rising red blood cell counts. An elevated hematocrit is the most common side effect that requires intervention, sometimes managed by adjusting the dose or, in some cases, donating blood. For men between 55 and 69, or younger men at higher risk for prostate cancer, PSA levels and prostate exams are checked before starting treatment and again at the first follow-up, then on an ongoing schedule based on age and risk factors.
Your doctor will also assess mood, energy, sexual function, and body composition changes at each visit. If symptoms haven’t improved after a few months, the dose may need adjusting or the delivery method may need to change. Some men respond better to injections than gels, or vice versa, and finding the right fit can take a round or two of adjustments.