LC-MS contamination screen

Screens for unrelated peptides and small molecules in the same vial.

Screens for unrelated peptides and small molecules in the same vial.

What this test tells you

Identity — LC-MS

Confirms the molecule is what the label claims, by measuring the mass of the eluting ions. Catches substitution and the wrong compound entirely.

Content — quantitative HPLC

How much is actually in the vial, compared against the declared strength and reported as a percentage of claim.

Purity — HPLC-UV

Area percent of the main peak, with the chromatogram attached so the figure can be checked rather than trusted.

A verifiable report

A report ID and unique key that resolve to a public record. Anything that does not resolve is not a genuine report.

Parameters

No fixed parameter sheet for this test. The method depends on the sample we receive. Contact us and we will tell you exactly what will be measured before you send anything.

Frequently asked questions

Additional services

Add any of these to the same vial, on the same certificate.

Optional add-ons

Raw data packageChromatogram and mass spectrum as open files, not just PDF.
+$18
pH measurementMeasured on reconstituted sample, reported to 0.01.
+$27
Fentanyl presence screenTargeted LC-MS screen. Reported present / not detected.
+$55
Variance testingTwo independent injections from the same vial, reported separately.
+$55
Additional report copyA second certificate issued under a different origin label.
+$37
Heavy metals (ICP-MS)As, Cd, Pb, Hg. Reported per element, <0.01 ppm.
+$125
Endotoxin (LAL)Kinetic LAL, reported in EU/mg. Requires a second vial of the same compound.
+$210
CHNS mass reportElemental composition, independent of the HPLC assay.
+$105
LC-MS contamination screenScreens for unrelated peptides and small molecules.
+$150
Sterility (TAMC + TYMC)Compendial sterility. 14-day incubation. Requires a second vial.
+$179
TFA content analysisResidual trifluoroacetic acid, reported as % w/w.
+$210