Potency Testing
What makes the number on the label mean something.
What makes the number on the label mean something.
Across the 17 programmes we price, all-in cost runs from $133 a month at the starter dose, with the cheapest first year at about $2,580 (NexLife, $215 a month at a 10 mg maintenance dose). Every figure on this page is on that same all-in basis.
All-in monthly cost = medication + any recurring fee, at a named dose, before tax and before prepaid discounts. Captured 2026-08-05. How we verify a price.
Where every tracked programme sits at 10 mg
Why this is the check that matters
A compounded preparation is not FDA-approved and is not reviewed by FDA for safety, effectiveness or quality before marketing. Its assurance comes from the pharmacy, the state board that licenses it and, at good operations, batch sterility and potency testing. That puts more of the verification burden on the patient, which is the honest reason the compounded price is lower.
What you can check yourself, free
State boards of pharmacy publish licensee lookups. FDA publishes outsourcing-facility registrations and its warning letters, searchable by company name. Between them you can establish in minutes whether a named pharmacy exists, holds a current licence and has been the subject of public enforcement. The check is only impossible when the programme refuses to name it — which is itself the answer.
What good disclosure looks like
A name and a state licence number. Not a category like ‘a licensed 503A partner’, and not a deflection about proprietary partnerships. You do not need to know pharmacy law to notice which of the three you received.
Where this sits against price
Disclosure and price are close to independent in this market. Some of the cheapest programmes publish the most and some of the dearest publish almost nothing. Verify separately from comparing cost, and let a failure on verification disqualify a programme regardless of the number.
What you can establish yourself, free, in about ten minutes
State boards of pharmacy publish licensee lookups. FDA publishes outsourcing-facility registrations and its warning letters, searchable by company name. Accreditation bodies publish directories. Between them you can establish whether a named pharmacy exists, holds a current licence, is registered where relevant and has been the subject of public enforcement.
The check is only impossible when the programme refuses to name the pharmacy — which is itself the answer, and the reason pharmacy disclosure carries the weight it does in our scoring.
What accreditation does and does not prove
Accreditation tests processes at a point in time. It does not certify any particular batch, and it is not a substitute for the state licence, which is the legal permission to operate. A commerce credential such as a payment-processing certification is weaker still: it establishes that a seller met a merchant standard, not that a preparation was made correctly.
Treat accreditation as a positive signal rather than a guarantee, and treat its absence as a question rather than a verdict.
The questions that actually separate operations
Is each batch tested for sterility and potency, and will you release the certificate of analysis for the lot I received? What is the beyond-use date on my vial and how was it determined? What concentration is my vial, and does it change between refills? Who do I contact if a shipment arrives warm, and who pays for the replacement?
Those four are answerable by any operation that is doing the work, and unanswerable by one that is not.
How this connects to what you will actually pay
Everything in this section resolves to one number: the all-in monthly cost at the dose you end up holding. Across the 17 programmes we price, that runs from $215 at the cheapest tracked route to several times that at the most expensive, for the identical molecule from the same category of licensed pharmacy.
6 of those programmes charge a recurring platform fee on top of medication and 11 hold one price at every strength. Those two facts explain most of the spread between advertised prices and real ones.
What we could verify and what we could not
11 of 32 tracked programmes have a price we read at the provider or manufacturer. The rest carry third-party figures we have not confirmed, or publish nothing we can interpret. Every table on this site marks which is which, and the comparison matrix lets you filter to verified prices only.
Where we have checked a third-party figure against a provider's own page, it has almost always moved — and it has moved upward. Promotional first months, prepaid bundle rates and medication-only figures that exclude memberships are all published as ongoing all-in prices. Assume an unverified figure is optimistic.
The regulatory distinction that sits under all of this
Compounded tirzepatide is not FDA-approved. FDA does not review compounded preparations for safety, effectiveness or quality before they are marketed. The active molecule is the same as the branded product; the pre-market review is not, and the assurance comes instead from the pharmacy, the state board that licenses it and, at good operations, batch sterility and potency testing.
That is a legitimate framework rather than a loophole, and it is also why the price is lower. It puts more of the verification burden on the patient, which is the honest trade being made.
Why this check exists at all
An FDA-approved product has been reviewed before marketing and is made under a federal quality system with supply-chain traceability. A compounded preparation has not been through that review. Its assurance comes from the pharmacy, the state board that licenses it and, at good operations, batch testing for sterility and potency.
That is a legitimate framework rather than a loophole, and it moves verification work onto the patient. This page is one part of that work.
What a programme's answer tells you
Fewer than a fifth of the 17 priced programmes name a dispensing pharmacy before purchase. The ones that do are not systematically more expensive, which undercuts the usual explanation that disclosure costs money.
A name and a licence number is the good answer. A category is incomplete but honest about what it withholds. A deflection about proprietary partnerships is itself the answer.
Where this sits against price
Disclosure and price are close to independent in this market. Some of the cheapest programmes publish the most and some of the dearest publish almost nothing.
Verify separately from comparing cost, and let a failure here disqualify a programme regardless of the number attached to it. A saving of a few hundred dollars a year does not compensate for not knowing who made what you are injecting weekly.
Reading potency testing against the rest of the decision
This sits inside a decision with three parts: what you will pay at the dose you hold, who makes what you are injecting, and what happens if you stop. Most published guidance covers the first and treats the other two as footnotes.
They are not footnotes. A price advantage of a few hundred dollars a year is erased by one interrupted month, and an interrupted month is a clinical event rather than an inconvenience — the withdrawal evidence for this drug class is unambiguous about what follows a gap.
Which is why this section exists separately from the pricing pages, and why the verification steps on it are worth completing even when the programme you are considering is the cheapest one on the site.
What to do with this before you enrol
Turn it into two or three questions you can send in an email. Anything on this page that cannot be converted into a question a programme could answer in writing is context rather than a check, and context does not protect you.
The programmes that answer promptly and specifically are, in our reading of the public record, rarely the ones patients later write about. That is a weak signal rather than evidence, but it costs nothing to collect and it arrives before your money does.
If a programme declines to answer, that is an answer. The market currently offers 17 priced alternatives, the cheapest verified at $215 a month all-in at a maintenance dose.
The failure mode this section is guarding against
Choosing a programme on a number that describes a different situation than yours. An entry price when you will hold maintenance. A medication figure when a membership applies. A promotional rate when you will renew. A prepaid rate when you will pay monthly.
Each of those errors is small individually and they compound in the same direction, which is why the cheapest-looking option in most published comparisons is the one most likely to be mis-stated.
Priced correctly, the cheapest verified route sits at $215 a month all-in at a maintenance dose. Anything materially below that band deserves the question of which distortion is producing it.
Why we publish the working rather than a verdict
A single recommendation is more useful to read and less useful to act on, because it hides the weighting. Two readers with different maintenance doses, different coverage and different tolerance for commitment should not receive the same answer.
So the tables carry the inputs and the rankings state their sort key. If you disagree with our weighting, take the file and weight it differently — that is what publishing it is for.
What would make this page wrong
A price change we have not captured, a programme leaving the market, or a figure we recorded from a third party that does not survive checking. All three have happened during 2026 and all three are logged when they do.
Prices here were captured 2026-08-05. Treat anything older than a month as needing a re-check against the provider's own page, which every programme record links directly.
How much potency testing should weigh
Less than the pharmacy question and more than the entry price. That ordering is unusual in published guidance, which typically inverts it, and it follows from what actually goes wrong: interrupted supply and unverifiable sourcing cost more than a modest price difference ever saves.
A useful test is whether a fact would change your decision if it were twice as bad. Double the price gap between the cheapest and second-cheapest verified routes and most people still choose on disclosure. Double the uncertainty about who compounded the vial and nobody should.
What a well-run programme publishes
The figure at 10 mg rather than at initiation. The pharmacy, by name. The prescriber or medical director. The cancellation notice period. And an unambiguous statement that a compounded preparation is not FDA-approved and is not reviewed for safety, effectiveness or quality before marketing.
Across the 17 priced programmes, the ones doing all of that span roughly the same price range as the ones doing none. Transparency here is a choice rather than a cost, which makes its absence informative rather than neutral.
The next step that actually moves things
Price your own course rather than reading someone else's ranking. Take the dose you expect to maintain, add every recurring fee, multiply by twelve, then ask whether you could sustain it for three years — the horizon the withdrawal evidence implies rather than the twelve months every comparison uses.
If the answer is no even at $215 a month, the useful move is checking coverage under a different indication rather than hunting a lower cash price. The cash market has a floor, and figures materially below it usually indicate one of four specific distortions.
Open these rather than taking our word for it. Every one is a regulator, a trial registry, a label, an accreditor or the manufacturer.
Compare every programme on one screen
The matrix carries all-in price at every dose, fee structure, commitment terms, pharmacy disclosure and verification status for every programme we track.