Independent analytical laboratory
United Diagnostics runs identity, purity, net content, elemental impurity, sterility and endotoxin analysis on research-use materials, and issues a certificate that anyone holding the vial can verify against this laboratory.
What a full certificate covers
A result is only meaningful next to the limit it was judged against and the method that produced it. Every certificate we issue prints all three.
| Analyte | Method | Specification |
|---|---|---|
| Peptide Purity | HPLC-UV, gradient RP | ≥ 95.0% (area %) |
| Net Peptide Content | HPLC-UV vs. reference standard | Not less than label claim |
| Identity | HPLC retention time | Matches reference standard |
| Arsenic (As) | ICP-MS | NMT 1.5 ppm |
| Cadmium (Cd) | ICP-MS | NMT 0.5 ppm |
| Lead (Pb) | ICP-MS | NMT 1 ppm |
| Mercury (Hg) | ICP-MS | NMT 1.5 ppm |
| Chromium (Cr) | ICP-MS | NMT 10 ppm |
| Sterility | Nucleic-acid amplification (PCR) | No growth detected |
| Endotoxin | Kinetic chromogenic LAL | < 0.25 EU/mL |
| Fentanyl Presence Analysis | LC-MS/MS, targeted | Not detected |
Testing panels
Every panel is quoted per submission. Email us what you have and which panel you want; we reply with price, turnaround and a submission reference to ship against.
Quantitative identity, purity and net content for the incretin class, including GLP-1, dual and triple agonists, and amylin analogues.
The general peptide panel. Covers secretagogues, repair and mitochondrial peptides, melanocortins, bioregulators and blends.
Identity and assay for non-peptide research materials: small-molecule actives, oral compounds and powders.
Ester identification and quantitation for oil-based injectables, plus content uniformity for oral solid dosage forms.
Microbiological release testing for anything intended to be handled as a sterile preparation.
Heavy-metal screen by ICP-MS, with limits aligned to the compendial expectations for parenteral routes.
Targeted presence analysis for fentanyl and common analogues, run as an incoming-material integrity check.
Everything above, run as one submission and issued as a single certificate of analysis with a scannable verification code.
Methods & instrumentation
Purity as area percent comes off reversed-phase HPLC. Confirmation that the peak is the compound you ordered comes off the mass spectrometer. Elemental impurities come off ICP-MS after digestion. We do not substitute one for another.
Gradient separation with diode-array detection. The workhorse for purity as area percent and for net content against a reference standard.
Mass confirmation of the intended species and targeted detection of adulterants down to trace level.
Elemental impurity quantitation in parts per million after acid digestion of the sample as supplied.
Endotoxin quantitation in EU/mL, read kinetically against a standard curve with positive product controls.
Broad-range bacterial and fungal detection, paired with a growth-based confirmation before a result is released.
Characterised comparators for every compound we report on. Identity and content claims are made against them, never against each other.
Submitting a sample
Email us the compound, the labeled content, how many lots, and which panel you want. We reply with price, turnaround and a submission reference.
Send sealed units, unopened, with the submission reference on the outside. We log them in against the reference on arrival.
Samples run inside the stated turnaround. If anything falls outside specification we contact you before the certificate is issued.
You receive a certificate of analysis carrying a certificate number, an access code and a QR code that resolves to a record hosted here.
Certificate verification
Every document we issue carries a certificate number, a private access code and a QR code. The QR code resolves to a record hosted on this domain that restates the results independently of the paper. If the two disagree, trust this site.
Request testing
Tell us what the material is, what the vial says it contains, and how many lots you need covered. We come back with a price, a turnaround and a submission reference. Testing is arranged by email. There is no account to open.
