Most of us don't question the label.

If it says 25 grams of protein per serving, we trust it. We shake it, drink it, and move on assuming the number means what it says.

Here's what most brands are counting on: that you never look any deeper than that number.

There's a practice in the supplement industry called protein spiking.

And if you've never heard of it, you're not alone, that's largely by design.

Protein spiking (also called nitrogen spiking or amino spiking) is when a brand inflates its protein number by adding cheap compounds that aren't actually protein. Things like glycine, taurine, or creatine, none of them harmful, but none of them the complete protein your body needs to build muscle, recover, and stay strong.

The label still reads "25g protein." The number looks right. But a chunk of that number isn't doing the job you think it is.

The simplest way to think about it: imagine you ordered a full meal and got a plate that was half food, half garnish. It looks the same. But it doesn't nourish you the same way.

So how does this even pass testing?

This is where it gets interesting and honestly, a little frustrating.

Most protein powders are tested using something called the Kjeldahl method. It's the industry standard, used in India and globally, and it works like this: a sample is broken down to release all the nitrogen it contains. That nitrogen is then measured and converted into a protein number.

The problem? The test measures nitrogen, not protein.

And nitrogen doesn't only come from protein. It also comes from glycine, taurine, and other compounds. The test can't tell the difference. It simply counts all nitrogen and reports it as protein.

So if a brand adds cheap nitrogen-containing compounds to its product, the test picks them up, and the protein number goes up. No alarm bells. No red flags. Just a number that looks better than it is.

A newer method called the Dumas method works faster but has the same limitation. More advanced amino acid analysis can give a true picture of protein quality, but it's expensive and not routinely required.

Is this actually happening in the market?

YES, and the data on it is REAL. 

The Citizens Protein Project (2024) tested 36 popular protein powders in India and found clear gaps between what labels claimed and what products actually contained. A 2025 follow-up identified patterns consistent with amino acid-based inflation in certain products.

This isn't a niche concern. It's a documented industry problem - in India and globally. 

Why do brands do this?

Straightforwardly, it costs less.

High-quality protein is expensive. Adding small amounts of cheap compounds to inflate a nitrogen reading costs a fraction of that. The product appears competitive on paper, the price stays low, and most consumers, checking labels the way most of us do, never notice.

But your body doesn't run on label numbers. It runs on nutrients. And if part of that 24g isn't real, usable protein, your recovery and results will quietly reflect that over time.

How to spot a brand that's doing it right

You don't need a lab. You just need to know what to look for.

Check for an amino acid profile. A brand that lists leucine, isoleucine, and valine separately is showing you what's actually inside. That's transparency. A brand that only shows a total protein number is giving you far less to work with.

Look for third-party certification. Informed Choice UK, for example, involves independent testing to verify label accuracy, it's not just a logo, it means someone outside the brand has checked the work.

Consider how it's made. Brands that manufacture in-house tend to have tighter control over quality than those that outsource production. Less handoff means less room for inconsistency.

Ask for the Certificate of Analysis. Any brand confident in their product should be able to share it. If that request is met with silence, that's an answer too.

And if a product is significantly cheaper than everything else but claims very high protein - ask why. Quality ingredients cost money. The math usually tells a story. 

A note from us at Origin Nutrition:

Protein spiking is exactly the kind of problem we built Origin to solve.

Labs independently test the products we make in the UK through Informed Choice - not just for protein accuracy, but for what else might be in the product. Our amino acid profile is on the label because we want you to see what you're actually getting, not just a headline number. And because we manufacture in our own facility, that standard is ours to keep, not someone else's to manage.

In the Citizens Protein Project, our product accurately matched its label claims. We think that should be the baseline for every brand - not a differentiator.

Strength for Every Body. And that means every scoop should earn it.

- Team Origin

References

[1] Maehre HK et al. Protein Determination – Method Matters. Foods. 2018. https://pmc.ncbi.nlm.nih.gov/articles/PMC5789268/

[2] Hayes M & Tiwari B. Measuring Protein Content in Food: An Overview of Methods. Foods. 2020. https://pmc.ncbi.nlm.nih.gov/articles/PMC7597951/

[3] Crittenden et al. Whey Protein Powder Analysis by Mid-Infrared Spectroscopy. Foods. 2021. https://pmc.ncbi.nlm.nih.gov/articles/PMC8151012/

[4] Philips CA et al. Citizens Protein Project. Medicine. 2024. https://pmc.ncbi.nlm.nih.gov/articles/PMC10994440/

[5] Philips CA et al. Citizens Protein Project 2. 2025. PMC12622730

[6] Emerson et al. Measured vs label declared macronutrients in Colombian whey proteins. PMC9261742

[7] Aly MO et al. Authentication of protein in high protein sports foods. Scientific Reports. 2023. https://www.nature.com/articles/s41598-023-15359-0

[8] Food Fraud in Plant-Based Proteins. Foods. 2025. https://www.nature.com/articles/s41598-023-15359-0

[9] Bowen et al. Identity testing of plant-based protein powder supplements. PMC6702227