What does HRT stand for?

Hormone replacement therapy. In practice the term covers menopausal hormone therapy, testosterone replacement, thyroid replacement and gender-affirming hormone therapy — related only by the word hormone, and otherwise separate fields.

Do I need bloodwork before starting?

In general yes, and timing of the draw matters because several of these hormones vary through the day or across a cycle. A service that accepts any result you send rather than ordering its own is doing a different job from one that does.

Can HRT be prescribed online?

It depends which hormone. Oestrogen and thyroid hormone are not controlled substances and are widely prescribed remotely. Testosterone is Schedule III, so remote prescribing depends on telemedicine exceptions to the Ryan Haight Act that are currently extended through the end of 2026.

Is HRT covered by insurance?

Menopausal and thyroid hormone therapy are commonly covered. Testosterone coverage usually depends on a documented diagnosis with supporting laboratory results, and the consultation may be out of network even where the medication is covered.

Hormone replacement therapy

"Hormone replacement therapy" is one term covering several different clinical situations that share almost nothing except the word hormone. Menopausal hormone therapy, testosterone therapy, thyroid replacement and gender-affirming hormone therapy are separate fields with separate evidence, separate prescribers and — this is the part that surprises people — sharply different access rules.

This page is a map of that territory: what each one refers to, what a workup generally involves, and why one of them is materially harder to get remotely than the others.

CoversSeveral distinct therapies
RequiresLaboratory testing
One isA controlled substance
WeDo not prescribe

Four different things under one name

Menopausal hormone therapy refers to oestrogen, sometimes with a progestogen, prescribed around and after menopause. It is the oldest use of the phrase and still the most common one in general practice.

Testosterone replacement therapy is prescribed where testosterone is measurably low alongside a matching clinical picture. It is the one branch of this field that involves a controlled substance, and that single fact changes how it can be prescribed.

Thyroid hormone replacement is prescribed for hypothyroidism and is generally managed in primary care. Gender-affirming hormone therapy is its own field with its own standards of care and its own specialists.

These get marketed together and are not interchangeable. A clinic advertising "HRT" is telling you almost nothing until you find out which of these it means.

What an assessment generally involves

Across all four branches the shape is similar: symptoms, history, laboratory measurement, and a decision made by a clinician who can see all three together. The laboratory step is not a formality and is not something a questionnaire can substitute for.

Timing of the draw matters more here than in most areas of medicine, because several of these hormones vary through the day or across a cycle. A result without its collection context is close to uninterpretable, which is why a service that accepts any result you send it is not doing the same job as one that orders its own.

We do not interpret results and no directory should. What a number means depends on the assay, the timing, the reference population and the rest of your clinical picture — that is a conversation with a licensed provider.

Why testosterone is the difficult one

Testosterone is a Schedule III controlled substance federally. Remote prescribing of controlled substances is governed by the Ryan Haight Act, which has historically required an in-person evaluation, subject to telemedicine exceptions granted during the COVID-19 public health emergency and extended repeatedly since.

The current extension runs through the end of 2026. That is a real deadline on a real rule, not a marketing detail, and it is the single most important thing to understand about remote testosterone access right now. Confirm the position with any clinic directly rather than trusting any page — including this one — to be current.

Oestrogen and thyroid hormone are not controlled substances, so none of that applies to them. State law adds a second layer across all of it: who may prescribe, and whether a nurse practitioner may do so independently, varies by state.

Where to start

If symptoms are what brought you here, they are worth investigating whatever the answer turns out to be — several conditions produce overlapping symptoms and have entirely different management. Start with testing ordered by someone who will read it in context.

Dosing, formulation and whether to prescribe at all are determined by a licensed provider.

How we verify providers

Provenance

Sources

Federal Register — Fourth Temporary Extension of COVID-19 Telemedicine Flexibilities for Prescription of Controlled Medications (90 FR 61301, Docket No. DEA-407) — retrieved 2026-08-06
DEA — Controlled Substances Schedules (anabolic steroids, Schedule III) — retrieved 2026-08-06
NIH MedlinePlus — Hormone testing / laboratory tests — retrieved 2026-08-06

Questions

Hormone replacement therapy: common questions

What does HRT stand for?: Hormone replacement therapy. In practice the term covers menopausal hormone therapy, testosterone replacement, thyroid replacement and gender-affirming hormone therapy — related only by the word hormone, and otherwise separate fields.
Do I need bloodwork before starting?: In general yes, and timing of the draw matters because several of these hormones vary through the day or across a cycle. A service that accepts any result you send rather than ordering its own is doing a different job from one that does.
Can HRT be prescribed online?: It depends which hormone. Oestrogen and thyroid hormone are not controlled substances and are widely prescribed remotely. Testosterone is Schedule III, so remote prescribing depends on telemedicine exceptions to the Ryan Haight Act that are currently extended through the end of 2026.
Is HRT covered by insurance?: Menopausal and thyroid hormone therapy are commonly covered. Testosterone coverage usually depends on a documented diagnosis with supporting laboratory results, and the consultation may be out of network even where the medication is covered.

Talk to a licensed provider about testing

We do not run a laboratory and we do not interpret results. We connect you with licensed providers who order the right panel, read it in context, and decide what happens next.

Find a licensed provider

TreatRadar is an information and referral service. We are not a medical provider, we do not practise medicine, and nothing here is medical advice, diagnosis, or a treatment recommendation. Decisions about treatment belong to you and a licensed clinician who knows your history.

We may be compensated when you connect with a provider through this site. That never changes which providers we list or how we describe them — how we verify providers.

Some information (pricing, provider coverage, state rules) may change or await verification — confirm details directly with the provider or the relevant state medical board before booking.