sciencePeptideDosage

Sermorelin Where to Buy: Matching 3357.9 g/mol in a Vial

Sermorelin where to buy, scored rather than listed: batch certificate, HPLC purity, 29 residues at 3357.9 g/mol, and the two tests this lot skipped.

verifiedMedically reviewed byMichael Bre, MD
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MEDICAL DISCLAIMER: Educational research guidelines only. Lyophilized peptides are investigational chemical compounds and are NOT approved for human consumption, diagnosis, or therapy. Consult a licensed physician before any research application.

Sermorelin where to buy is a question about criteria before it is a question about vendors, because the vendor list changes every quarter and the criteria do not. Six of them decide the answer, and only two involve price.

The criteria are worth stating in units. A batch certificate that names a laboratory and a date. A purity figure produced by a chromatographic method rather than asserted. An identity that resolves to 29 residues and a molecular weight of 3357.9 g/mol. An endotoxin figure for anything that will be dissolved. Domestic dispatch. A refund policy in writing.

What follows applies those criteria to the listing this site tracks and scores it honestly, which means marking it down where its certificate stops. The vendor is an affiliate partner and it still loses points below, because a scoring page that only ever produces one answer is not scoring anything.

Lowest cost per milligram we track

Sermorelin — Ascension Peptides

Independently assayed research material. With the code the 10 mg vial works out at $3.60/mg.

Sermorelin · 10 mg$72.00$36.00$3.60/mgGet the 10 mg →

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.

  • One third-party assay published for this lot
  • Free carriage over $250
  • Same-day dispatch before 2pm CST
Discount codePEPTIDEDECK−50%

Sermorelin where to buy: the criteria, weighted before the vendor

Weights first, result second. Anyone can reverse-engineer criteria that produce a preferred winner, so the honest order is to fix the weights while the answer is still unknown.

CriterionWeightCheckable inWhat settles it
Batch-specific certificate25 %1 minuteA lot code on the document that matches the vial
Purity by a named method20 %1 minuteHPLC or HPLC-MS with a peak count, not the phrase "98 % plus"
Identity confirmed20 %3 minutesSequence and mass that resolve to the expected molecule
Endotoxin and sterility scope20 %1 minuteWhether either test appears on the document at all
Domestic dispatch and recourse10 %2 minutesA stated origin and a written refund policy
Price per milligram5 %1 minuteVial price divided by mass, with the divisor stated

Price carries 5 % deliberately. A vial that is cheap per milligram and unverified per milligram is not cheap, it is unpriced risk with a number printed next to it. The rate only becomes decision-relevant once the four testing criteria above it are satisfied.

Identity: 29 residues, 3357.9 g/mol, and what a mass check rules out

Identity is the criterion buyers skip and the one that is easiest to verify, because the expected values are published and fixed.

Sermorelin is the active N-terminal fragment of human growth hormone-releasing hormone, GHRH(1-29) amide. PubChem CID 16132413 gives the formula as C149H246N44O42S and the molecular weight as 3357.9 g/mol. The sequence printed on lot 38-01260229 resolves to 29 residues with a C-terminal amide, which is the canonical fragment rather than something adjacent to it.

Turn that into arithmetic and it stops being trivia. A 10 mg label at 3357.9 g/mol is 10 mg ÷ 3357.9 mg per mmol, or 2.978 micromoles of compound. The 11.31 mg this lot assayed is 3.368 micromoles, 13.1 % more. Priced with the code at $36.00, that is $12.09 per micromole on the label and $10.69 per micromole on the assay.

Molar figures are the only way to compare across compounds honestly, because a milligram of a 3357.9 g/mol peptide is not the same count of molecules as a milligram of anything heavier or lighter. It is also the check that catches the substitution buyers most fear: a vial of a cheaper secretagogue sold under this name would not produce this mass. Our identity page works through why sermorelin, tesamorelin, ipamorelin and ibutamoren are four different purchases sold as one category.

Scoring the listing this site links, including where it loses

Applying the weights to the Ascension listing and its published certificate gives a result with a visible hole in it.

CriterionWeightWhat lot 38-01260229 showsScore
Batch-specific certificate25 %Lot 38-01260229, analysed 2026-02-07, signed 2026-02-1325 / 25
Purity by a named method20 %99.79 % by HPLC-UV-MS, 4 detected peaks20 / 20
Identity confirmed20 %Sequence resolves to GHRH(1-29) amide, 29 residues20 / 20
Endotoxin and sterility scope20 %Neither test appears on this certificate0 / 20
Domestic dispatch and recourse10 %US dispatch stated, refund terms published8 / 10
Price per milligram5 %$3.60 on the label, $3.18 on the assay5 / 5

That totals 78 out of 100, and the missing 20 sits in one row. The certificate reports purity and quantity, and testing scope is a property of the lot rather than of the seller, so a later lot could close the gap and this score would move. What it cannot do is close by inference. A page that reads 99.79 % and concludes anything about endotoxin has invented the second number from the first.

The 2-point deduction on dispatch is for the ordinary gap between a stated policy and an exercised one, which no document settles in advance.

Supplier or repackager, and the difference a document makes

Most storefronts selling research peptides do not synthesise them. That is not itself a problem, and pretending otherwise would rule out most of the market. What separates a supplier worth buying from a repackager worth avoiding is whether anything ties the powder in the vial to a test.

  • A lot code that appears in two places. On the vial and on the certificate. A certificate with no lot code, or a lot code that appears nowhere on the product, documents someone else's material.
  • A named laboratory and a named analyst. This one names MZ Biolabs in Tucson, Arizona, and Ken Pendarvis as the analyst. An unnamed "third-party lab" is a claim, not a reference.
  • A date that precedes your order. An analysis dated after the batch shipped is describing something you did not receive.
  • A method with a peak count. HPLC-UV-MS with 4 detected peaks tells you how the number was produced. A bare percentage does not.

Run those four checks and most of the market falls away without any judgement about vendors as businesses. The checks are about documents, and documents either exist or do not.

The second answer to the question, and why it exists for this compound

Where to buy has an unusual second answer here, and any page that gives only the research-listing answer is leaving out the more legitimate route.

Sermorelin was an approved drug. EMD Serono marketed it as Geref under NDA 019863 for diagnostic use and NDA 020443 for therapeutic use, the second approved on 1997-09-26. Both are discontinued, and the FDA record carries the determination that the product was not discontinued or withdrawn for safety or effectiveness reasons. There is no current US label.

The consequence is procedural rather than sentimental. Under section 503A a compounding pharmacy may use a bulk substance that was a component of an FDA-approved drug product, and sermorelin acetate was exactly that. FDA's Category 2 bulk substances list, which flags substances presenting significant safety risks, names ibutamoren mesylate under both 503A and 503B and names ipamorelin acetate, GHRP-2 and GHRP-6. Sermorelin is absent from the Category 2 list in every one of those sections. So a prescription-based route genuinely exists, which is not true of most research peptides, and our prescription page covers what that route asks for.

Hold both facts at once. The approved indications were paediatric growth hormone deficiency and pituitary diagnostics. PubMed returns 332 records mentioning the compound, 3 with it in the title, and zero when the search adds anti-aging. ClinicalTrials.gov registers no studies naming it. A real regulatory route does not create a literature for the use the modern market advertises.

What the price tells you once the criteria are settled

Price enters last because it is the only criterion that cannot be wrong. $99.99 is the list, $72.00 is the site price and $36.00 applies with the code PEPTIDEDECK. Divided by the 10 mg label those are $10.00, $7.20 and $3.60 per milligram. Divided by the 11.31 mg this lot assayed they are $8.84, $6.37 and $3.18.

Quantity tiers take 3 %, 5 % or 10 % off the list price separately, which puts the best published tier at $89.99 a vial, or $9.00 per labelled milligram. That is two and a half times the code price, so the tiers are not the lever they look like on a compound with a single SKU. Free shipping starts at $250.

The order to run these checks in is the reverse of the order most buyers use. Certificate, then identity, then testing scope, then dispatch, then arithmetic. Only the last step has a number in it, and the first three decide whether that number describes anything. If you want the arithmetic in isolation, our price page runs it across every price point and quantity tier.

Frequently Asked Questions

What is the single most useful check before buying sermorelin?expand_more

Open the certificate and read its scope line. On lot 38-01260229 that scope is purity and quantity, which means 99.79 % and 11.31 mg are supported and endotoxin and sterility are not tested at all. That takes under a minute and tells you more than any amount of storefront copy, because it defines what the document can and cannot back up.

How do I confirm a vial holds sermorelin rather than another secretagogue?expand_more

Check the identity data against published values. Sermorelin is GHRH(1-29) amide, 29 residues, formula C149H246N44O42S and molecular weight 3357.9 g/mol, listed as PubChem CID 16132413. The sequence printed on lot 38-01260229 resolves to that fragment. A different secretagogue would not produce that mass, so a mass and sequence check rules out the substitutions buyers worry about most.

Why does the vendor this page links to only score 78 out of 100?expand_more

Because endotoxin and sterility scope carries 20 % of the weighting and this lot's certificate reports neither, so it scores zero on that criterion. It scores full marks on batch certificate, purity method, identity and price per milligram, and loses 2 points on the general gap between a published refund policy and an exercised one. Scope is a property of a lot, so a future certificate could change this.

Is there a legal way to obtain sermorelin in the United States?expand_more

Yes, through a prescription and a compounding pharmacy. It was approved as Geref under NDA 019863 and NDA 020443, the therapeutic approval dated 1997-09-26, and although both are discontinued, section 503A permits compounding from a bulk substance that was a component of an approved drug product. That route is real here, unlike for most research peptides.

Does a high purity number make endotoxin testing unnecessary?expand_more

No, they measure unrelated things. Purity is the proportion of chromatographic area attributable to the main peak. Endotoxin is a measure of bacterial contamination that a purity run does not detect. A vial can be 99.79 % pure by area and untested for endotoxin at the same time, which is exactly the position lot 38-01260229 is in.

References & Citations

  1. [1]

    PubChem CID 16132413, Sermorelin. Formula C149H246N44O42S, molecular weight 3357.9 g/mol.View source →

  2. [2]

    FDA. Drugs@FDA records for Geref, NDA 019863 and NDA 020443, EMD Serono, marketing status Discontinued.View source →

  3. [3]

    FDA. Certain Bulk Drug Substances for Use in Compounding That May Present Significant Safety Risks.View source →

  4. [4]

    PubMed. Records mentioning sermorelin, 332 in total and 3 carrying the term in the title.View source →