AOD-9604 is one of the most heavily marketed "fat-loss peptides" on the research market, yet the human trial it's famous for never actually hit its primary endpoint. Most vendor pages won't tell you that. This guide will.
If you've been searching where to buy AOD-9604, you've probably noticed two things: the price is low, and almost every store tells the same glowing story about "300 obese subjects" losing weight. The reality is more nuanced, and it matters for what you pay and who you trust. Below you'll find where AOD-9604 is actually sold in 2026, how to read a certificate of analysis, what fair pricing looks like, and the red flags that separate a legitimate research vendor from a relabeling operation.
Key Takeaways
- AOD-9604 is a research peptide, NOT an FDA-approved drug. It is sold for laboratory and research use only and is on the WADA Prohibited List
- Ascension Peptides (ascensionpeptides.com) is our top-rated source: batch-specific third-party COAs, ≥98% HPLC purity, US domestic shipping, in stock
- Always demand a batch-specific COA tied to the lot number on your vial, with both HPLC (purity) and mass spec (identity)
- Expect roughly $25 for 2mg, $40-45 for 5mg, and $65-75 for 10mg from quality vendors. Suspiciously cheap usually means skipped testing
- Be honest with yourself about the evidence: AOD-9604's larger obesity program failed to beat placebo, which is why it was never approved as a weight-loss drug
What AOD-9604 Actually Is
AOD-9604 (sometimes written Tyr-hGH Fragment 176-191) is a 16-amino-acid synthetic peptide. It's the C-terminal tail of human growth hormone, the fragment 176-191, with a tyrosine residue added to the front for stability. It was developed at Monash University in Australia by Metabolic Pharmaceuticals as a candidate obesity drug.
The appeal on paper is elegant. In early animal work, this fragment appeared to trigger lipolysis, the breakdown of stored fat, while skipping the parts of growth hormone that raise blood sugar or IGF-1. In obese mice, chronic treatment with the fragment increased fat oxidation and reduced body weight, and in beta-3 adrenergic receptor knockout mice the effect disappeared, which pointed to a beta-3-AR-linked mechanism (Heffernan et al., Endocrinology 2001). A companion study reported increased fat oxidation and weight loss in obese mice after chronic treatment with growth hormone or this modified C-terminal fragment (Heffernan et al., Int J Obes 2001).
Here's the part vendors gloss over. The mouse data was promising, but the human obesity program did not deliver. A 12-week study generated early optimism, but the larger Phase 2b trial did not show statistically significant weight loss over placebo, and Metabolic Pharmaceuticals ultimately did not bring it to market as an obesity treatment. AOD-9604 is not FDA-approved for anything, and in recent years US regulators have treated it as ineligible for pharmacy compounding. It is also banned in sport under the WADA Prohibited List. None of that makes it uninteresting as a research compound. It just means the buyer-side hype should be taken with a heavy grain of salt. For a fuller comparison with a genuinely potent fat-loss molecule, see our breakdown of AOD-9604 vs Retatrutide.
Where to Buy AOD-9604 in 2026
There is no pharmacy counter for AOD-9604, no insurance pathway, and no prescription route in the normal sense. Realistically, all current access runs through online research-peptide vendors who sell it labeled "for research use only, not for human consumption." That single channel contains everything from meticulous labs to drop-shippers reboxing the same powder.
When people ask where to buy AOD-9604, the honest answer is that the vendor is the entire decision. The molecule is the same chemical formula (C78H123N23O23S2, molecular weight roughly 1815) everywhere. What differs is whether the vial actually contains what the label claims, at the purity claimed, free of process impurities. That comes down to testing and transparency, not branding.
A trustworthy AOD-9604 vendor does a short, verifiable list of things:
- Publishes a batch-specific certificate of analysis you can match to your vial's lot number
- Uses an independent third-party lab, not just an in-house claim
- Reports purity by HPLC at ≥98% and confirms identity by mass spectrometry
- Ships from US domestic stock with clear inventory status
- Avoids medical and dosing claims, which is both a legal and a credibility signal
If a store can't clear those bars, the low sticker price isn't a bargain. It's a gamble.
Best Place to Buy AOD-9604: Ascension Peptides
Ascension Peptides is the vendor we recommend for AOD-9604, and it isn't about commission. It's that they consistently do the verification work that most of this market skips.
Batch-specific third-party COAs. Not a generic "we test our stuff" line. Ascension publishes lot-level certificates from independent labs, so you can confirm the exact batch you received rather than a six-month-old certificate for a different run.
Purity that holds up. Their AOD-9604 tests at ≥98% by HPLC. Some budget sellers hover lower, and with a small 16-amino-acid peptide, process impurities are exactly what you don't want in a research sample.
In-stock, domestic shipping. Supply gaps are common across peptide vendors. Ascension keeps real inventory and ships within the US, usually arriving in a few business days.
No medical theater. They sell it as a research compound and don't dress it up with weight-loss protocols, which is both more honest and more legally sound.
You can check current pricing, stock, and the active COA on the product page at Ascension Peptides.
How to Verify AOD-9604 Quality: The COA
"Third-party tested" is printed on nearly every product page. Almost none explain what to actually check. Here's the short version that matters.
Batch-specific, not product-level. A product-level COA covers a product line and may have been run months ago on different material. A batch-specific COA references the exact lot number printed on your vial. The lot on the paper should match the lot on the glass. If it doesn't, or there's no lot at all, treat it as unverified.
HPLC for purity, MS for identity. High-performance liquid chromatography tells you what percentage of the sample is the actual compound. Aim for ≥98%; 95% is borderline; lower is a flag. Mass spectrometry confirms the molecular weight matches AOD-9604 (around 1815). HPLC alone can show "high purity" of the wrong thing, so you want both.
A lab you can find. Names like Janoshik and Colmaric Analyticals run peptide testing and have portals where a certificate ID can be cross-checked. A "lab" with no website is not a lab you can rely on.
Watch for certificates with no lot number, an old testing date, a chromatogram that doesn't actually accompany the purity figure, or a PDF that looks edited. Any of those should slow you down.
What Does AOD-9604 Cost in 2026?
AOD-9604 is one of the cheaper research peptides, which is part of why it's so widely sold. Across reputable vendors in 2026, typical figures look like this:
- 2mg vial: roughly $20-28
- 5mg vial: roughly $40-45
- 10mg vial: roughly $65-75
- Bulk (5+ vials): often 5-10% off per unit
Because the molecule is inexpensive to source, price tells you even less here than with high-cost peptides. The real cost difference between a good vendor and a bad one is the third-party testing, which adds a few dollars per vial. Saving five dollars by buying from a seller with no COA is a poor trade for a research sample of unknown identity.
Red Flags to Avoid
The AOD-9604 market is crowded, and the bad actors share patterns.
Recycled trial claims with no caveats. Any page that promises "consistent weight loss in 300 obese subjects" while omitting that the larger program failed to beat placebo is selling a story, not a sample.
No COA, or generic COA only. No batch-specific certificate, no sale. This is the single most important filter.
Human dosing protocols on a "research chemical." A vendor that tells you how to dose AOD-9604 "for fat loss" while calling it research-only is talking out of both sides of its mouth.
Prices far below the pack with free everything. When a vial is dramatically cheaper than every reputable vendor, the cut is almost always testing or synthesis quality.
No community footprint. Research-peptide communities on Reddit and longevity forums actively vet vendors. A seller with zero verifiable reputation, good or bad, deserves caution.
How to Get AOD-9604
For research peptides like AOD-9604, there's no prescription and no doctor's visit involved, because it isn't being sold or bought as a medicine. The practical path is straightforward: choose a vendor that publishes batch-specific COAs, confirm the current lot's purity is ≥98% by HPLC, place the order, and pay by credit card where possible so you have chargeback protection if something arrives wrong.
AOD-9604 ships as a lyophilized (freeze-dried) powder. In a research setting it is reconstituted with bacteriostatic water before use; the benzyl alcohol in bacteriostatic water preserves the solution far longer than plain sterile water. Store the unreconstituted vial in the refrigerator, keep reconstituted material cold and out of light, and don't freeze it once mixed. If you're weighing AOD-9604 against other recovery and metabolic compounds, our guides on the CJC-1295 growth-hormone story and the best peptide capsules add useful context.
AOD-9604 Vendor Comparison
Top Vendors
Ranked by purity, third-party testing, COA availability, and price.
>99% · Published COA · US, free over $200
99.7% · Lot-tracked COA · Same-day, US
>99% · COA + LC/MS · US, free over $200
"rigorously tested" · Lab reports section · US
Prices are approximate and change often. Always confirm current pricing and that a live, batch-specific COA exists before you buy.
Related Buying Guides
Use these next if you are comparing adjacent research-peptide sourcing decisions:
Frequently Asked Questions
Where can I buy AOD-9604?
AOD-9604 is sold through online research-peptide vendors, since it isn't an FDA-approved drug and has no pharmacy pathway. Our top recommendation is Ascension Peptides, which publishes batch-specific third-party COAs, reports ≥98% HPLC purity, and ships from US domestic stock. Whichever vendor you choose, verify the lot-specific certificate before ordering.
Is AOD-9604 legal to buy?
AOD-9604 itself is not a scheduled or controlled substance, and it's widely sold labeled "for research use only, not for human consumption." It is not FDA-approved as a drug or dietary ingredient, and US regulators have treated it as ineligible for pharmacy compounding. It's also banned in sport under the WADA Prohibited List. Buying it as a research material from a domestic vendor carries low practical legal risk, but you are operating outside the standard drug-approval system.
How much does AOD-9604 cost?
In 2026, expect roughly $20-28 for a 2mg vial, $40-45 for 5mg, and $65-75 for 10mg from reputable vendors, with small bulk discounts. Because the molecule is cheap to produce, an unusually low price is more likely a sign of skipped testing than a genuine deal.
How do I know my AOD-9604 is real and high purity?
Demand a batch-specific certificate of analysis whose lot number matches your vial. It should show ≥98% purity by HPLC plus a mass-spec identity confirmation against AOD-9604's molecular weight (about 1815). The testing lab should be independently verifiable, such as Janoshik or Colmaric. No lot number or no findable lab means treat it as unverified.
Do I need a prescription for AOD-9604?
No. AOD-9604 isn't a prescription medication, and it isn't FDA-approved, so it's sold as a research compound rather than dispensed by a pharmacy. That also means there's no medical oversight built into the purchase, so quality verification is entirely on you.
Does AOD-9604 actually work for fat loss?
This is where honesty matters. Early animal studies showed lipolytic and weight-reducing effects, but the larger human obesity program did not show significant weight loss over placebo, which is why it was never approved. Treat strong fat-loss claims from sellers with skepticism. For a compound with robust human weight-loss data, see our GLP-1 fat-loss explainer.
The Bottom Line on Where to Buy AOD-9604
If you came here to figure out where to buy AOD-9604, the decision is less about finding it and more about not getting a relabeled mystery vial. The compound is cheap and everywhere, the marketing is louder than the evidence, and the only thing that reliably separates vendors is whether they publish batch-specific, third-party COAs at ≥98% HPLC purity.
Lead with the COA, weigh reputation second, and let price come last. Ascension Peptides clears those bars consistently, which is why it's where we'd start.
Medical Disclaimer: This article is for informational purposes only and is not medical advice. AOD-9604 is not FDA-approved and is not intended to diagnose, treat, cure, or prevent any disease. It is sold for research use only. Always consult a qualified healthcare provider before considering any new compound, and understand that purchasing and handling research peptides carries legal and health risks that vary by jurisdiction.
