BioNorth Labs
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Peptides

Cagrilintide/Semaglutide (CagriSema) blend analysis

The CagriSema pair, measured component by component.

Full details are in the parameters section below.

Each component of the blend is identified and quantified separately, so an underdosed component cannot hide behind a correct total: Cagrilintide, Semaglutide.

For blends we do not report a purity percentage. The method cannot tell a second active compound apart from an impurity, and a figure that cannot be defended does not belong on a report.

The ratio between the two is as easy to get wrong as the total amount, so both figures are reported next to the declared content.

What you send in

One unopened vial, or min. 30 mg raw powder

What the report contains

  • Identification per component
  • Measured mass per component
  • Deviation from declared content
  • Chromatogram
ParameterValue
Target compoundsCagrilintide, Semaglutide
Testing methodHPLC + LCMS
Detection limit cutoffLess than 1/20th of the usual dosage per vial
Result format (lyophilizate)mg per vial per component
Result format (alternative)m/m purity per component
Minimum amount for the test (lyophilizate)1 whole unopened vial with lyophilizate
Minimum amount for the test (raw API powder)30 mg in a sealed glass vial, so the sample cannot pull in moisture
Average turnaround time7 business days

€567.00

Additional services
  • What is this?

    Measures the trifluoroacetic acid left behind by purification. TFA is a counter-ion: it adds weight to the vial without adding peptide, which is why a vial can weigh exactly what the label says and still be underdosed.

  • What is this?

    The raw instrument files behind the report, so your own chemist can re-integrate the peaks instead of taking our integration on trust.

  • What is this?

    Targeted screen for fentanyl and its common analogues. A contamination question, not a purity one — trace amounts matter here, and the standard method is not looking for them.

  • What is this?

    Reports the result as mass-by-mass purity instead of milligrams per vial. Free of charge, and the more useful format for raw powder rather than a finished vial.

  • What is this?

    Several units from the same batch measured separately, so you see the spread between vials rather than one number that happens to come from one of them.

  • What is this?

    The pH of the solution as supplied, or of the lyophilizate once reconstituted.

  • What is this?

    Bacterial endotoxins by LAL, reported in endotoxin units and checked against the pharmacopoeia limit. Endotoxins survive sterilisation and stay invisible to a purity test.

  • What is this?

    Elemental analysis that separates net peptide from counter-ion salt and residual water. Together with the TFA figure it explains where a missing milligram went.

  • What is this?

    A second report on the same sample, issued under a different name or client reference.

  • What is this?

    Mass spectrometric screen for peptides that should not be in the vial at all — cross-contamination from shared synthesis or filling equipment.

  • What is this?

    The sample is cultured to establish whether viable bacteria or fungi are present. Adds to the turnaround: the incubation period cannot be shortened.

  • What is this?

    Lead, cadmium, arsenic and mercury by ICP-MS, down to ppb level. Relevant for raw material of unknown origin.

Total€567.00

After checkout you receive a test ID and the shipping instructions. The turnaround time starts once your sample arrives at the lab.

Contact us

Not sure which analysis you need?

Tell us what the sample is and what you want to know about it, and we will point you at the right test — or tell you that no test we run will answer your question.

Response time
Within one business day, in English.
Shipping address
You receive the address to ship your sample to by email once you have placed an order.

Before you write

Two things make the answer a lot more useful:

  • What the sample is meant to be, and what the label declares.
  • The form it is in — oil solution, powder, tablets, lyophilised vial.

We cannot advise on dosing or human use, and we do not answer questions about where to obtain a compound.