Home › Learn › Tirzepatide testing
Tirzepatide testing.
Dual GIP / GLP-1 receptor agonist — 39 residues, two AEEA linkers, C20 fatty-diacid chain.
The short answer
Tirzepatide is tested by reverse-phase HPLC (UV 214 nm): chromatographic purity plus duplicate quantification in mg per vial against a USP reference standard. Identity is assessed by retention time against the same standard, with mass-spectrometry confirmation available as an add-on. €99 per vial, 48–72 h target turnaround, and the result is published in the public database.
What the analysis measures
Purity, quantity, identity
- Chromatographic purity (%). The main peak's share of total integrated area at UV 214 nm. It is a ratio of peptide-related peaks — not a claim about absolute mass content.
- Quantity (mg/vial). Measured content against a USP reference standard, run in duplicate; both values appear on the certificate next to the label claim.
- Identity. Retention time against the reference standard. That is presumptive identity, and the certificate says so; a mass-spectrometry match (+€79 add-on) confirms it conclusively.
The complete method — column, gradient, wavelength, limits — is published on the open method page.
Reference parameters
The molecule on paper
| Molecular weight | 4813 Da |
| Molecular formula | C225H348N48O68 |
| CAS number | 2023788-19-2 |
| Class | Dual GIP / GLP-1 receptor agonist — 39 residues, two AEEA linkers, C20 fatty-diacid chain. |
| Also seen as | Mounjaro-class analogue (research-grade vials) |
| Tariff category | GLP-1 & metabolic |
| Reference basis | A USP reference standard |
Parameters as recorded in PubChem, rounded. Your supplier's salt form and net-peptide content will differ from free-peptide values.
Worth knowing
Before you test Tirzepatide
Tirzepatide is quantified against a USP reference standard. Label claims run high — 5 to 60 mg per vial is common — so small relative errors in preparation become large absolute ones, and duplicate preparation is not optional. Oxidised and degraded impurities elute close to the main peak; the purity figure is only as good as the method's resolution, which is why our method and its limits are published in full.
Price
€99 per vial, published
Tirzepatide testing is €99 at the published founder rate — see its row in the price list. Add-ons: mass-spectrometry identity confirmation +€79 (adds 5–7 days), extended CoA data +€15, additional report +€29 (at order creation), rush +50%, additional vial of the same lot −30%.
On the certificate
What the CoA shows
- Measured quantity in duplicate, next to the label claim.
- Chromatographic purity with the full impurity table, not just the headline figure.
- The identity basis, stated: retention-time (presumptive) or mass-spectral (confirmed).
- Method reference and version, so the numbers can be interrogated.
- A public database entry — every result is published, verifiable by anyone, good or bad.
New to certificates? Read how to read a peptide CoA and how to verify one.
FAQ
Tirzepatide testing questions
What chromatographic purity should tirzepatide reach?
Well-manufactured research-grade tirzepatide typically reports ≥97–99% chromatographic purity. Below that range the impurity profile deserves attention — the individual peaks, not just the headline percentage.
How much does Tirzepatide testing cost?
€99 per vial at the published founder rate: chromatographic purity plus duplicate quantification in mg per vial, with the result published in the public database. Mass-spectrometry identity confirmation is +€79, extended CoA data +€15, and an additional report +€29 at order creation.
How long does Tirzepatide testing take?
The target turnaround is 48–72 hours from sample receipt. A rush option at +50% moves the sample to the front of the queue; the mass-spectrometry add-on adds 5–7 days.
Same category
Also tested in GLP-1 & metabolic
Semaglutide · Retatrutide · Cagrilintide · Liraglutide · Survodutide — or see the full price list.
Iberian Analytical opens in Q1 2027 — €99 per test, 48–72 h target, and every result published in a public database, mandatory and free. Nothing is sold on this site today. Leave an email and we will write once, when the laboratory starts issuing certificates.
Testing for a business? Apply for a trade account — volume tiers and a 24-month rate lock.