Third-party tested compounded tirzepatide and semaglutide
Read Nov 6, 2026
16 US sellers say on their own pages that their compounded semaglutide or tirzepatide is tested, 1 of them posting results by lot and 2 giving results when asked. These are the sellers' own statements: we have not seen the results, and compounded drugs are not FDA-approved: the FDA does not review them for safety, effectiveness or quality before they are marketed. FDA (FDA: concerns with unapproved GLP-1 drugs used for weight loss)
Sellers that post test results
Pepti: $99/28 days
“independent labs test lots for sterility, bacterial endotoxin and potency. Pepti publishes the results by lot number” source (hellopepti.com) (Pepti source)View offer
Sellers that give results on request
Peak Wellness: $249/mo
“Batch potency & sterility testing available on request” source (go.trypeak.com) (Peak Wellness source)View offer
Noom: $279/28 days
“Noom GLP-1Rx Programs patients may request a COA” source (noom.com) (Noom source)View offer
Sellers that say batches are tested
The price is the seller's lowest current compounded price. Ask for the result for your lot.
Collective: $59/mo + $199/yr membership
“every batch is third-party tested for purity and potency.” source (collective.org) (Collective source)View offer
Precision Telemed: $149.99/mo
“Every compound is tested by an independent, accredited laboratory with a Certificate of Analysis verifying purity, potency, sterility, and endotoxin levels for each batch.” source (precisiontelemed.com) (Precision Telemed source)View offer
bmiMD: $159/mo
“Our pharmacies perform third party testing through FDA and DEA registered labs to run quality control checks.” source (bmimd.com) (bmiMD source)View offer
System Labs: $179/mo
“We partner with compounding pharmacies that do rigorous third party testing to ensure quality and safety.” source (systemlabs.com) (System Labs source)View offer
Shed: $199/mo
“TESTED FOR POTENCY + STERILITY” source (tryshed.com) (Shed source)View offer
Tomorrow: $199/mo
“Compounded by a licensed 503A pharmacy and tested for potency and purity before it ships.” source (trytomorrow.com) (Tomorrow source)View offer
Zappy Health: $249/mo
“Partner pharmacies conduct third-party testing, including potency and sterility testing.” source (zappyhealth.com) (Zappy Health source)View offer
Elevated Health: $296/mo
“Each batch is rigorously third-party tested in FDA and DEA-registered labs.” source (elevatedhealth.com) (Elevated Health source)View offer
Direct Meds: $297/mo
“Our medications undergo third-party testing for purity, safety, and potency” source (directmeds.com) (Direct Meds source)View offer
Found: $289/28 days
“Every batch is third party tested for potency, purity, and sterility before it reaches you.” source (joinfound.com) (Found source)View offer
Remedy Meds: $299 per 4 weeks
“Independent batch testing before every shipment.” source (remedymeds.com) (Remedy Meds source)View offer
“All compounding takes place at a licensed pharmacy, complies with state boards and receives a valid Certificate of Analysis (COA).” source (agelessrx.com) (AgelessRx source)
“Our partner pharmacies perform third-party testing through DEA-compliant labs to run quality-control checks for every compounded lot prescribed to SkinnyRx patients.” source (skinnyrx.com) (SkinnyRx source)
Sellers that say a pharmacy may test
NexLife: $139/mo
“Pharmacies may conduct internal quality-control procedures, which can include third-party testing” source (nexlife.com) (NexLife source)View offer
A seller that is not listed may still test: its pages we read do not say. Who makes it: which pharmacy each seller names.
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Common questions
Is compounded tirzepatide third-party tested?
Some sellers say so. Collective, Precision Telemed, bmiMD, System Labs, Shed, Tomorrow, Zappy Health, Elevated Health, Direct Meds, Found, Remedy Meds, AgelessRx, SkinnyRx state that batches are tested. Pepti posts results by lot, and Peak Wellness, Noom give results when asked. Read Nov 6, 2026. Most other sellers do not say on the pages we read.
What is a certificate of analysis (COA)?
A lab's report on one batch: what it found for potency, sterility and similar checks. Rx.com puts it this way: "A COA helps, but it is not an FDA review, and it should match the lot number on your vial."
Is compounded tirzepatide safe?
Compounded drugs are not FDA-approved: the FDA does not review them for safety, effectiveness or quality before they are marketed. So no FDA finding says a compounded product is safe or unsafe. The FDA lists more than 730 adverse event reports for compounded tirzepatide and 990 for compounded semaglutide, as of May 31, 2026. A clinician can say whether one is right for you.
What should I ask a seller before I pay?
Which pharmacy fills the prescription, and whether it can show a test for your lot. Rx.com says: "The pharmacy can tell you how batches are tested for potency and sterility."