What we run

Two assays, three analytes. Stated plainly so you know exactly what a Riftline report does and does not establish.

01

The assays

Assay What it establishes

Purity

HPLC-UV

The proportion of the sample attributable to the target peptide, reported as area percent, alongside a table of the impurity and degradation peaks observed.

Identity

LC-MS

That the main component is the peptide it claims to be — expected mass against measured mass. Purity alone never establishes this, which is why the two run together.

Purity is not identity. A sample can be 99% pure and still be the wrong molecule. Any report that gives you a purity figure without an identity confirmation has told you how clean something is without telling you what it is.

02

The catalog

Analyte	Class
Retatrutide	GLP-1 / GIP / glucagon receptor agonist
Tirzepatide	GLP-1 / GIP receptor agonist
Semaglutide	GLP-1 receptor agonist

Requests outside this list are declined rather than accommodated. If your catalog moves and you think we should widen ours, tell us — but we won't promise a method we haven't built.

03

What is on the report

Rather than describe it, here is the actual format of every certificate we issue — including the verification block your customers will use. Result fields on the specimen describe what appears there; we don't print numbers from a run that didn't happen.

See a specimen report

01 Report ID, and the dates the sample was received, tested, and issued

02 Client of record and the sample as received, described

03 Analyte, declared identity, and the specification the result is judged against

04 Purity as area percent, with the observed impurity / degradation peak table

05 Identity result — expected mass against measured mass

06 The chromatogram and the mass spectrum

07 The named analyst, signed and dated

08 A verification block: the report ID and where to check it

04

Your results are yours

A result that doesn't meet spec is still your result. We tell you, and it goes no further.

Reports are released to the client of record and to nobody else. A report ID resolves only for reports you have released — we don't publish results, forward them to anyone, or disclose that a test took place. We don't maintain a public index of who tested what. Sending us a sample carries no risk of a bad number becoming public on our side.

05

What we don't claim

Results relate only to the sample as submitted. We test what arrives in the vial — we do not inspect your facility, audit your supplier, or certify a lot we did not receive. Sterility, endotoxin, residual solvents, and elemental impurities are outside the stated scope and are not implied by a purity and identity report.

Tell us what you're running Verify a report