DEMO BUILD — results, reviews and prices are placeholder data. Run DEMO=0 python3 build.py after wiring real content.
Home/ Services/ Others/ Protein powder
Others

Protein powder — net protein content

Nitrogen-based net protein content for powders. The cheapest test on the menu.

Protein content in a powder is a nitrogen measurement. Amino-acid spiking inflates the number, so this test reports net protein and flags the discrepancy when the nitrogen figure is inconsistent with the peptide assay.

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
TargetProtein powders (whey, casein, plant blends)
Testing methodKjeldahl / Dumas nitrogen + HPLC amino profile
Result formatg protein per 100 g, per serving
Minimum sample30 g powder
Frequently asked questions
What is amino spiking?

Adding free amino acids like glycine or taurine raises the nitrogen number without adding complete protein. It is detectable.

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

Not sure this is the right test?

Describe the sample and we will tell you what to order — or whether we can test it at all.

Ask us