What labs are required before starting TRT?

A complete baseline typically includes total testosterone and free testosterone, SHBG, estradiol, a complete blood count (CBC, especially hematocrit), PSA for men over a certain age, TSH for thyroid, and often A1c and a metabolic or lipid panel. The exact panel is tailored to you by your provider; the goal is to confirm the diagnosis and establish a safe baseline before any treatment.

Why do I need free testosterone, not just total?

Total testosterone measures everything in the blood, but much of it is bound to SHBG and not biologically active. Free testosterone reflects what your body can actually use. Two people can have the same total level and very different free levels, which is why both are measured alongside SHBG.

Why check estradiol on TRT?

Some testosterone converts to estradiol (a form of estrogen) in the body. A balanced level matters for mood, libido, and bone health; levels that are too high or too low can cause symptoms. Monitoring estradiol lets your provider keep the protocol balanced.

Why monitor hematocrit and PSA?

Testosterone can raise red blood cell count (hematocrit); the CBC catches this so it can be managed safely. PSA is monitored in men because testosterone therapy interacts with prostate health, and tracking it is a standard safety step.

How often should labs be repeated?

Most patients retest a few weeks to a few months after starting or changing a dose, then every 3 to 6 months once stable. Your provider sets the cadence based on your results, symptoms, and the delivery method.

Where do I get the labs done?

Lab work is processed through third-party reference labs like LabCorp and Quest Diagnostics, with draw locations near you. Costs are set by the lab and reviewed with you before ordering. HSA and FSA cards are accepted.

Lab Guide · Testosterone Therapy

What labs do you need before TRT?

Good testosterone therapy starts with good data. Before a single dose, a proper panel confirms the diagnosis and sets a safe baseline, and the same markers guide every adjustment after. Here is the panel, what each marker tells your provider, and how often it should be rechecked.

Why It Matters

TRT is guided by labs, not symptoms alone.

Low energy, low libido, brain fog, and lost strength can all suggest low testosterone, but they can also come from thyroid issues, poor sleep, or other causes. Labs separate the possibilities and confirm whether testosterone is actually the problem. They also establish the safety baseline that monitoring depends on. A clinic that prescribes testosterone without a real panel is cutting the corner that keeps therapy safe.

The Panel

The markers, and what each one tells us.

Marker	What it tells your provider
Total testosterone	The overall level in the blood; the headline number, but not the whole story.
Free testosterone	The portion that is biologically active and available to your body.
SHBG	The protein that binds testosterone; explains why total and free can diverge.
Estradiol (E2)	Testosterone converts partly to estrogen; balance affects mood, libido, and bone health.
CBC (hematocrit)	Testosterone can raise red blood cell count; this keeps it in a safe range.
PSA	Prostate safety marker, monitored in men per clinical guidance.
TSH	Thyroid check; thyroid problems mimic low-testosterone symptoms.
A1c / metabolic	Blood sugar and metabolic health, which interact with hormones.

This is educational, not a prescription. Your exact panel is tailored to you by Ali Claunch, NP-C.

Retesting

How often labs get repeated.

After starting therapy or changing a dose, labs are usually rechecked within a few weeks to a few months to confirm the protocol is working and safe. Once you are stable, every three to six months is typical. The delivery method, your symptoms, and your results all influence the cadence, which your provider sets individually. Lab work runs through third-party reference labs like LabCorp and Quest, with draw locations near you and HSA or FSA accepted.

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Ongoing care includes $75 follow-up visits at least every 90 days, so your plan always reflects your progress.

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A Note on Compounded Medications and FDA Oversight

Compounded peptides, GLP-1 medications, hormone therapies, NAD+ preparations, and other prescription items dispensed through Vesta Aesthetics are prepared by licensed 503A compounding pharmacies for individual patients pursuant to a valid prescription from Ali Claunch, NP-C, following a personalized clinical evaluation. Compounded medications are not FDA-approved. The FDA does not evaluate compounded preparations for safety, efficacy, or potency. Vesta Aesthetics operates in compliance with FDA regulations governing 503A patient-specific compounding and does not stock, resell, or distribute medications outside this framework. If the FDA changes guidance, restricts, or removes access to any compounded preparation, Vesta will discontinue that preparation in alignment with federal regulation.

Information on this site is educational and is not a substitute for individualized medical advice, diagnosis, or treatment. Outcomes vary by patient. No specific clinical result is promised or guaranteed. Use of any prescription medication carries risk; please review all risks with your provider before beginning therapy. Vesta Aesthetics is a self-pay medical practice and does not bill insurance. See our 503A Promise for full sourcing detail.