Editorial policy

Elena Marchetti writes about peptide therapeutics and drug development. Last reviewed 4 September 2026.

What I am trying to do

Make the differences between five molecules legible in one screen, and never imply an equivalence the data does not support. That last part is the specific failure this site exists to correct, so it is the rule I break least willingly.

Where the molecule figures come from

Half-lives, mechanisms and regulatory status come from published sources, and each one is cited on the page it appears on. Where the literature gives a range, I print the range. I do not collapse a range to a midpoint to make a chart tidier — the spread is usually the information. Where two sources disagree, I print both and say they disagree, rather than picking the one that reads better.

Regulatory status is stated and not editorialised. An unapproved molecule is not thereby a bad one, and an approved one is not thereby better. I say what the record is.

How sellers are found

By searching for the molecule the way a buyer would, and by working through the telehealth companies that actually dispense it. A company is listed because it sells one of these peptides, not because it pays us. Companies that pay us nothing are listed alongside the ones that do, in the same format, and their write-ups are not systematically less generous.

How prices are read

Off the seller’s own page, on a date I record. A price is never published as a bare number: it carries the billing cycle and the dose it buys, because “$189” and “$189 per month for 300 mcg nightly” are not the same claim. A floor price — “from $99” — is labelled as a floor and is not comparable to a standing rate.

Prices are drug-scoped. A figure read off a seller’s GLP-1 page is not a price for sermorelin, and I do not carry one across. If a price is only visible after an intake, I say so rather than leaving the cell empty in a way that implies the seller publishes nothing.

How often figures are re-checked

Prices are re-read on a recurring cycle and the read date is printed beside the figure. If you are reading a date that looks old, treat the number as old — that is exactly why the date is there. Verify anything material on the seller’s own site before you buy.

What a commercial relationship changes

It does not change the comparison tables. Mechanism, half-life, selectivity and regulatory status belong to a molecule, not to a seller, and no seller can buy a cell in that grid. The commercial surface sits below the comparison, never inside it.

It does not change the price I print, remove a competitor, or buy a kinder sentence. What it does change is that the site gets paid, which is why every paid button carries a label directly beneath it saying so. The full accounting is on the disclosure page, and it is computed from the seller data rather than typed, so it cannot quietly go stale.

What I will not publish

• A clinical claim dressed as a comparison. I have no medical licence and no clinical review process, and I do not write as though I had either.
• A price without its cycle and the dose it buys.
• A figure without a source, or a source without a date.
• An absence stated as a fact without saying how widely I looked for it.
• A generated image, a stock photograph of a patient, or an author portrait.

Corrections

I own the corrections log. If something here is wrong, write to editor@sermorelincompare.com and the fix gets published on the corrections page, dated, saying what was wrong and when.