From synthesis to a released batch.
Every vial we ship went through the same sequence. This page is that sequence end to end, and where the paperwork enters it. For the assay-by-assay detail, see the methodology page.
Six steps between a sequence and a vial.
Steps one and two describe how research peptides are manufactured as a field. Steps three through six are what we control, and what the certificate for your lot documents.
Synthesis
Research peptides are built by solid-phase synthesis: the chain is assembled one amino acid at a time against a defined sequence, then cleaved from its support. The sequence is the specification — everything downstream is a check that the material matches it.
Purification and lyophilisation
The crude product is purified to separate the target peptide from the deletion sequences, truncations and reagent residue that synthesis leaves behind, then freeze-dried into a sealed vial. Lyophilised material is stable at room temperature, which is why it survives transit without a cold pack.
Sampling the finished lot
A sample is drawn from the finished lot — the same material that will be filled into vials and shipped. A result from a reference batch, or from the compound in general, describes nothing about what you receive.
Independent analysis
The sample goes to a laboratory that we do not own and that is named on the certificate it issues. We claim no accreditation for it, because none is on file. Independence is what makes the result worth reading: a laboratory with no stake in the sale has no reason to report a number other than the one it measured.
Release, or reject
Results are compared against the release specification for that compound. A lot that misses spec does not become a discounted lot — it does not ship. This is the step that makes every step before it worth doing.
The certificate is published for that lot
The Certificate of Analysis is issued for that lot. Where the record is published, it is on this site under the lot number printed on the vial, and matching one against the other is how you check it.
Who synthesises the compounds, where, and under what quality system. Steps 01 and 02 above are written as a general description of the field precisely because our specific route is not confirmed.
What the certificate covers.
The same six assays on every batch certificate. Each one rules out a different way a vial can be wrong.
| Assay | Method | What it establishes |
|---|---|---|
| Identity | HPLC + mass spec | The material is the peptide it is labelled as |
| Purity | HPLC | The proportion of the target peptide against synthesis-related impurities |
| Net peptide content | HPLC | How much of the powder is peptide rather than salts and residual water |
| Heavy metals | ICP-MS | Elemental contamination from reagents or equipment |
| Sterility | PCR | Microbial contamination in the finished vial |
| Endotoxin | USP <85> | Bacterial endotoxin, which survives sterilisation |
Purity is reported as a figure on each lot's certificate. We do not print a purity percentage on this site, because a number that is not attached to a lot number describes nothing you can verify.
What a certificate does not tell you.
Verification is a narrow instrument, and it is worth being precise about how narrow.
It is not a safety assessment.
It is not a biological result.
It describes a sample.
Compounds on this catalog are described by mechanism and by what published research examines. Nothing here is a claim that a compound treats, prevents or improves any condition in any organism, and nothing here is guidance on use.
For laboratory and research use only · Not for human or veterinary consumption · Not evaluated by the FDA
Questions
Is the testing laboratory independent of Elements DNA?
Yes. Analysis is carried out by laboratories that have no stake in the result, and their names are printed on every certificate. Elements DNA does not run its own assays and does not report its own numbers.
What happens to a lot that fails its specification?
It is not released for sale as conforming material. Where a lot has been released with a result outside its label claim, the certificate says so in the laboratory's words and the record is published rather than withheld.
Where are these peptides synthesised?
Solid-phase peptide synthesis followed by chromatographic purification and lyophilisation is how research peptides are made as a field. What this page describes is that general process, not a claim about a specific facility.
The synthesis facility, its location, and whether manufacturing is contracted or in-house. Unconfirmed, so unstated.