Tesamorelin

We say elsewhere on this site that panels differ between products and that a purchaser should read the certificate rather than the marketing. This is the product where that instruction pays off best, and the reason is worth setting out before the document itself.

The endotoxin result is a number. Most certificates in this category, including most in this catalogue, report endotoxin as a bare pass. A pass tells you the laboratory applied a threshold and the sample was under it, without telling you the threshold or how far under. This certificate reports 0.50 endotoxin units per milligram against a limit of 35.00, so the margin is visible rather than implied. That is a materially more useful statement and it is the exception rather than the rule here.

Heavy metals are named individually. Arsenic, cadmium, lead and mercury are each listed with a limit of detection, a limit of quantitation, a specification and a result. All four were not detected. A single line reading "heavy metals: pass" would convey almost nothing by comparison.

And the section that was not run is printed anyway. The residual solvents page appears in full with its column headings and the words "Not Tested" against it. A laboratory that prints an empty section rather than deleting it is telling you what it did not do, which is the harder disclosure and the more informative document.

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The interactive verification record is shown below, followed by the same information reproduced as text on this page and the full three-page certificate as a document. The record does not depend on the embed loading.

Certificate of analysis - batch FXBM9F, three pages

Batch record

FXBM9F

Peptide, batch FXBM9F

Bacterial endotoxin

Heavy metals, parts per billion

Limit of detection 16.3 ppb; limit of quantitation 48.9 ppb, for all four analytes.

Residual solvents

Not tested. The laboratory prints this section on the certificate with its headings intact rather than omitting it.

All figures above are specific to batch FXBM9F and are not specifications carried across other batches. Each batch is tested individually and reports its own results.

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The certificate above reports 8.56 mg per unit against a 10 mg nominal. That figure is printed here rather than summarised away, and it deserves an explanation rather than a shrug.

A quantity on a peptide unit can mean two different things. Gross fill weight is how much powder went into the container. Peptide content is how much of that powder is the peptide itself. The two are never identical, because a synthesised peptide is isolated as a salt carrying a counterion and because lyophilized material retains residual moisture. On a typical preparation the peptide accounts for roughly seventy to ninety percent of the powder by weight. A container filled honestly to its gross target will still measure below that target when the peptide alone is quantified.

In practice: calculate from the measured figure on the certificate for the batch supplied, not from the nominal on the label. Where a protocol depends on a precise quantity that is the only number worth using. A supplier who does not measure content cannot tell you either way, which is the more common situation in this category.

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Several compounds in this catalogue act at the same receptor and are usually presented as interchangeable options. They are better understood as one family, and this entry sits apart from the rest of it in a way that is easy to miss.

The others are all built on the 29-residue fragment, which is the portion of the hormone sufficient for receptor activation. This one retains the full endogenous sequence and adds a small unsaturated acyl group at the N-terminus rather than substituting residues within the chain.

Two consequences for study design. A fifteen-residue difference is not a detail: the additional C-terminal region is absent from every other compound in the family, so any contribution it makes is present here and nowhere else. And the modification strategy differs in kind. Substituting residues within a chain and acylating a terminus are different interventions, and material behaviour, aggregation tendency and analytical profile do not transfer between them.

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Panels differ between products and between batches. What follows is the scope of testing performed on this batch. Nothing is claimed unless it appears on the certificate for the batch supplied.

The absence of a mass confirmation is the one real gap here, and it matters more on a 44-residue chain than on a short peptide. A deletion sequence missing one residue, or material carrying the backbone without its acyl group, differs in mass but may not separate cleanly on a coarse chromatographic method. Where that is material to your work, request a mass spectrum before ordering. Everything else on this certificate is unusually well covered.

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Preparation conditions are the responsibility of the receiving laboratory. Verum provides no protocol, no preparation instruction, and no guidance on use.

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This page carries no bibliography. The published record on this compound consists overwhelmingly of registration and post-approval trials conducted in human participants, using pharmaceutical-grade product manufactured to standards this material is not manufactured to. Reproducing that literature beside a research-labelled unit would misrepresent both what is being sold and what those trials examined. Researchers working on growth hormone-releasing hormone receptor pharmacology know where that record lives.

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That comparison is set out because these four compounds are routinely presented as interchangeable options and their legal positions are not remotely equivalent.

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By placing an order you confirm each of the following:

Confirmation is recorded at checkout against your order. Verum reserves the right to decline or cancel any order.

Tesamorelin is available in the United States as an approved prescription medicine. If that is what you are looking for, a licensed prescriber is the correct route and this is not a substitute for it.

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Orders placed before the daily cutoff are dispatched the same day from our United States warehouse. Domestic orders typically arrive within two business days. A tracking reference is issued by email once the consignment leaves the facility. Each unit carries a scannable code linking to the certificate for its own batch.

Not for human or veterinary use. Not for use in diagnostic or therapeutic procedures. This product is a laboratory reagent. Nothing on this page constitutes medical advice, a recommendation for personal use, or a representation that this material is safe or effective for any purpose. No statement here has been evaluated by the U.S. Food and Drug Administration.