Best Sermorelin Source: Our Pick Scores 63 of 100
Summary: A ranking is only worth reading if the rule came first. The weighting here was written before anything was scored, and the source this page links to fails the criterion that carries the most weight.
This content is for informational purposes only and is not medical advice. Always consult a qualified healthcare provider before starting, changing, or stopping any medication.
Best sermorelin source is a claim nobody can license, so the only honest way to make it is to publish the measuring stick before the measurement and let you argue with the stick rather than with our taste. The weighting below was fixed before anything was scored. The source this page links to comes out at 63 out of 100, and it loses the single largest block of points.
That source is on the card, so its documents can be opened alongside the workings.
Where readers actually buy it
Ascension Peptides — Sermorelin
Research-grade Sermorelin, assayed by an outside lab and shipped from the US. The code below takes half off the vial.
The published certificate for lot 38-01260229 assays this vial at 11.31 mg against a 10 mg label, and reports purity and quantity only, with no endotoxin or sterility testing. Buying 3, 5 or 10 takes 3%, 5% or 10% off the list price. Free shipping starts at $250.
- Batch certificate published for the lot
- Free shipping over $250
- Ships same day if ordered before 2pm CST
Sold for laboratory research only and not for human consumption. These are affiliate links: we may earn a commission at no cost to you, and it does not change what we recommend. Prices checked September 6, 2026.
Best sermorelin source: the weighting, published first
| Criterion | Weight | What earns the points |
|---|---|---|
| Testing scope | 35 | Which assays appear on the certificate for the lot being shipped. Purity and identity are the floor. Endotoxin and sterility are what a reconstituted, injected product turns on |
| Lot traceability | 25 | A batch code on the certificate that matches the batch code on the vial, from a named laboratory with a named analyst and a dated analysis |
| Identity confirmation | 20 | Evidence the vial holds sermorelin and not an adjacent catalogue item: a printed sequence, or a mass and formula that can be checked against a public record |
| Quantity verification | 10 | An independent measurement of how much material is in the vial, rather than a restatement of the label |
| Dispatch and written recourse | 10 | Domestic stock, a published dispatch cutoff, and a written policy for a damaged, mislabelled or mismatched delivery |
The public record behind the identity criterion is PubChem CID 16132413, which returns sermorelin with formula C149H246N44O42S and a molecular weight of 3357.9 g/mol [3]. Anyone can check a certificate against it in about a minute, which is why the criterion is worth 20 points rather than being waved through.
Testing scope takes the largest share on purpose. Everything else on that list tells you what the material is. Only testing scope speaks to what happens if it goes into a person, and FDA has stated the concern for this class of peptides plainly, describing a risk for immunogenicity due to the potential for aggregation and peptide related impurities [1]. Endotoxin testing is a separate discipline from purity assay with its own guidance and its own instrumentation [2]. A purity result does not approach it.
The scorecard
| Criterion | What the published documents show | Points |
|---|---|---|
| Testing scope | The certificate for lot 38-01260229 reports purity and quantity. No endotoxin test appears on it and no sterility test appears on it | 0 of 35 |
| Lot traceability | MZ Biolabs, 2102 N Country Club Rd, Tucson, Arizona. Lot 38-01260229, analysed 7 February 2026, signed 13 February, analyst Ken Pendarvis, method HPLC-UV-MS | 25 of 25 |
| Identity confirmation | The printed sequence converts to YADAIFTNSYRKVLGQLSARKLLQDIMSR, 29 residues with a C terminal amide, and formula and mass agree with PubChem CID 16132413 | 20 of 20 |
| Quantity verification | 11.31 mg measured against a 10 mg label, an overfill of 13.1 percent on that lot | 10 of 10 |
| Dispatch and written recourse | US stock, same day dispatch before 2pm CST, free shipping from $250. The returns terms are published but thin on a lot mismatch specifically | 8 of 10 |
| Total | 63 of 100 |
Sixty three is not a recommendation dressed up as a number. It is a source that documents identity, traceability and quantity better than most of its market, and documents the injectable question not at all on this lot.
Where the thirty five points went
The certificate does what it says it does very well. Purity at 99.79 percent across four detected peaks, by a method that is named, from a laboratory with a street address and an analyst who signed it. That is more than a great many storefronts publish.
It reports nothing about endotoxin and nothing about sterility. Endotoxin is a fragment of bacterial cell wall. It is heat stable, it is invisible to a purity assay, and it is the reason a certificate can be entirely truthful at 99.79 percent while leaving the most consequential question untouched for anyone who reconstitutes the powder.
We are not going to score around a zero on the criterion this page called most important. If you would weight it differently, do so, and the arithmetic above is laid out so you can.
There is one more reason the zero is worth sitting with rather than waving through. Sermorelin is bought almost entirely on hope rather than on evidence, so the documents are doing more work here than they would for a compound with a literature behind it. PubMed returns 332 papers mentioning sermorelin, three with the word in the title, and zero for sermorelin paired with anti ageing. ClinicalTrials.gov registers no studies naming it at all, and a registry search that appears to return some is returning GHRH, tesamorelin and octreotide trials instead. The approved indications were paediatric growth hormone deficiency and pituitary function testing. When there is no trial to appeal to, the certificate is not one input among many. It is the input.
What was deliberately not scored
Price. Not a criterion at any weight. Sermorelin has no marketed reference product to price against, because Geref was discontinued and no current US label exists, so the market has no anchor and a price is close to noise as a quality signal. The arithmetic still matters once a source is chosen, and it is on our sermorelin price page: $36.00 with the code, $3.60 a milligram on the label, $3.18 against the quantity this lot assayed.
Reputation and forum consensus. Unverifiable, gameable, and mostly a measure of marketing spend.
The phrase third party tested. That is a claim about a document offered instead of the document. It scores nothing. The certificate on the page, the laboratory named on it and the lot code matching your vial are three things you can see.
Quantity tiers. Buying three, five or ten vials takes 3, 5 or 10 percent off the list price. That is a purchasing detail, not a quality signal, and it arrives at the moment a buyer is least inclined to reread a certificate.
The source that this scorecard cannot rank
There is a route to sermorelin that does not involve scoring a storefront at all, and for this compound it is not hypothetical.
Sermorelin was an approved American medicine, marketed as Geref by EMD Serono, with the therapeutic application approved on 26 September 1997 and now discontinued. FDA's record carries the determination that the product was not discontinued or withdrawn for safety or effectiveness reasons. Because sermorelin acetate was a component of an approved drug product, a compounding pharmacy has a lawful basis under section 503A to work from it. The compound is also absent from FDA's list of bulk substances presenting significant safety risks, in every section, while ibutamoren mesylate sits there under both 503A and 503B and ipamorelin acetate, GHRP-2 and GHRP-6 sit there as well [1].
A licensed pharmacy preparing a medicine for a named patient is not on the same scale as a storefront with a certificate, which is why it is not in the table. If supervised use is what you are after, that route is mapped on how to get a sermorelin prescription, and the channels are compared on where to buy sermorelin.
We earn a commission if you use the link on the card, which is disclosed there and in our disclaimer. Publishing the weighting before the score, and publishing the score we did not like, is what the FTC endorsement guides expect of a page like this [4].
Common questions about the best sermorelin source
- Why link to a source that scores 63?
- Because it is the best documented option we can actually check, and because hiding the 63 would make the page worthless. The score exists so you can see exactly which part of the purchase is undocumented and decide whether that part matters for what you are doing.
- Would any source score full marks?
- One publishing a lot matched certificate that includes an endotoxin result and a sterility result alongside purity and identity would. Certificates like that exist elsewhere in this catalogue, which is why the criterion is not an unreasonable one.
- Does 99.79 percent purity make this a top source?
- It earns points under identity and traceability and none under testing scope. Purity describes what fraction of the material is the intended compound and says nothing about bacterial endotoxin or sterility, which are separate assays.
- Should I weight testing scope at 35 points if the material is for bench work?
- Probably not, and the weighting is published so you can change it. For laboratory use, identity, purity and lot traceability may be the entire question, in which case this source scores 55 out of the 65 points that remain relevant.
- Is a source with a longer certificate automatically better?
- Only if the certificate is tied to your lot. A comprehensive document about a different batch scores nothing, because it is a report about material you are not receiving.
The short version
The weighting came first: testing scope 35, lot traceability 25, identity 20, quantity 10, dispatch and recourse 10. The source linked here scores 63 out of 100, taking full marks on traceability, identity and quantity and zero on testing scope, because the certificate for lot 38-01260229 carries no endotoxin or sterility result. That is the whole finding. Behind it sits a compound approved as Geref in 1997 and discontinued for commercial reasons, which means the highest scoring source of all is one this scale cannot measure: a pharmacy filling a prescription.