Collagen, Gelatin and Beef Protein Powders: Hidden Sources of Copper, Lead (and other Heavy Toxic Metals)?

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That scoop of beef protein powder may not be powdered beef muscle at all. In Collagen, Gelatin and Beef Protein Powders: Hidden Sources of Copper and Lead?, we look at evidence that these products can be made from cattle hides, bones and connective tissues — and laboratory testing shows that measurable copper, lead (and other toxic heavy metals) often remains in the finished powders. Here’s what studies, industry specifications and manufacturers reveal about what’s actually in these popular protein supplements.

When you buy a container labeled “beef protein,” what do you imagine?

Most consumers would probably envision beef — the muscle meat we recognize as steak, roast or ground beef — that has somehow been concentrated and dried into a convenient protein powder.

But that may not be what you’re getting.

While we expect collagen and gelatin to be sourced from hides, bones and tissues, we expect more from beef protein powders.

Why are hides, bones and tissues such a bad thing?

Copper, lead — and other heavy toxic metals.

A closer look at how collagen, gelatin and many beef-derived protein powders are produced reveals something most consumers probably don’t realize: The protein can come from cattle hides, bones and collagen-rich connective tissues — not the cuts of muscle meat we normally think of as beef.

This distinction matters.

These animal tissues contain minerals and toxic metals, and processing does not remove them. Actual laboratory testing has found measurable copper, aluminum, manganese, lead and nickel in bovine-hide gelatin, bone collagen peptides and a commercial beef protein powder.

Let’s look at what we actually know.

Where Does Collagen Come From?

Collagen is not muscle protein.

It is a structural protein concentrated throughout the animal’s skin and connective tissues, including tendons, ligaments and bones. These collagen-rich tissues provide the raw materials for commercial gelatin and collagen peptides.

This isn’t speculation about what could be used. Cattle hides and other collagen-rich animal tissues are established raw materials for gelatin and collagen production.

And some major commercial collagen companies openly acknowledge the source. Most consumers are fine with that. But what most of us didn’t know until now is what hides in those hides and tissues.

But What About “Beef Protein” Powder?

A product labeled beef protein isolate, beef protein hydrolysate or beef protein powder sounds considerably more like dehydrated muscle meat.

However, the term itself does not necessarily tell consumers which tissues of the animal supplied the protein.

That’s an important omission.

Some beef protein ingredients are produced from collagen-rich bovine materials or bone-broth-derived materials, while other manufacturers provide little public information about the exact tissues entering their manufacturing process.

We shouldn’t claim that every beef protein powder contains no skeletal muscle unless the manufacturer provides that information.

But there are several good reasons to question the assumption that these powders are simply dried steaks, roasts or ground beef.

Why Expensive Muscle Meat Would Make Little Economic Sense

Think about the manufacturing process.

Ordinary beef muscle already has substantial commercial value as:

steaks
roasts
hamburger
stew meat
processed beef products

A manufacturer purchasing edible muscle meat would then have to subject that relatively valuable commodity to extensive processing — potentially cooking or hydrolysis, removal of fat and other components, filtration, concentration and finally drying — just to turn it into protein powder.

Meanwhile, the beef-processing industry generates hides, bones and collagen-rich connective tissues that have much less value as conventional muscle meat but are exceptionally rich sources of recoverable protein.

Those materials are precisely the raw materials from which the gelatin and collagen industries already know how to extract purified protein.

Economically, therefore, it makes much more sense to recover protein from these lower-value bovine materials than to grind up valuable steaks and roasts.

That economic argument does not prove the source of every beef protein powder.

The popular mental picture of “steak turned into powder” is highly questionable — particularly when manufacturers don’t disclose the tissue source.

Consumers who want to know should ask a very specific question:

What parts or tissues of the cow are used to manufacture your beef protein isolate?

“100% beef” or “bovine protein” doesn’t answer that question.

The Amino Acids Can Also Provide Clues

Muscle protein and collagen protein don’t have the same amino-acid profile.

Collagen is particularly rich in amino acids such as glycine, proline and hydroxyproline, giving collagen-derived proteins a distinctly different profile from skeletal muscle protein.

Therefore, the amino-acid profile of a beef protein powder can sometimes provide another clue about the type of protein being supplied.

A product dominated by collagen-associated amino acids should not be assumed to be equivalent to powdered skeletal muscle simply because the front of the container says “beef protein” — if anything, just the opposite.

Why This Matters for Copper and other toxic metals

This brings us to a largely overlooked issue.

Animal tissues don’t consist exclusively of protein.

They also contain minerals.

Copper, in particular, has biological functions associated with connective tissue. The copper-dependent enzyme lysyl oxidase participates in the cross-linking of collagen and elastin.

So it shouldn’t be surprising that copper can be detected in bovine connective tissues and in products manufactured from them.

The question is:

Does copper remain after the tissue has been processed into gelatin, collagen or protein powder?

Actual laboratory testing says, Yes.

Researchers Tested Gelatin Made Specifically From Bovine Hides

One particularly useful study analyzed gelatin manufactured specifically from bovine hides.

This study removes the uncertainty about tissue source: The researchers knew the starting material was hide.

The researchers measured the elemental composition of the finished gelatin and found copper in every sample: Among four samples, the bovine-hide gelatin contained approximately 1.9 to 3.9 ppm copper. That’s about 80 grams per scoop, or 2 tablespoons.

The processing used to convert cattle hide into gelatin clearly did not eliminate the copper.

Copper Wasn’t the Only Element Remaining

The same bovine-hide gelatin contained numerous other elements.

Depending on the sample, researchers found approximately:

Iron: 42–87 ppm
Zinc: 8–11 ppm
Aluminum: 5–10 ppm
Chromium: 1.7–5.2 ppm
Manganese: 2.7–8.2 ppm
Nickel: 0.64–1.85 ppm
Lead: 0.21–0.94 ppm

The study demonstrates an important principle: Converting animal hide into gelatin doesn’t strip away all of the elements associated with the original material.

Heavy toxic metals such as aluminum, manganese, lead and nickel are present, and the amount of nickel is higher than qualifies for a low nickel diet. If you’re consuming any of these protein powders daily, that’s a potentially problematic source of toxicity.

Concerns Over Lead Alone

Lead concentrations of 0.21–0.94 ppm may sound tiny, but at a 15-gram daily serving, they translate to roughly 3–14 micrograms of lead per day. At the upper end, the powder alone could exceed the FDA’s 8.8-microgram daily dietary reference level for women of childbearing age — and even the lowest end exceeds the FDA’s much lower 2.2-microgram daily reference level for children.

This is especially concerning for parents who regularly add collagen or protein powder to their children’s or teens’ smoothies, shakes or other foods, because lead exposure is cumulative and these powders represent just one source added to lead already encountered through food, water and the environment.

The Clean Label Project tested 160 top-selling protein powders from 70 brands and found that 47% exceeded at least one federal or state safety threshold, with lead among the heavy metals detected. Most strikingly, 79% of organic, 77% of plant-based and 65% of chocolate protein powders exceeded California Prop 65 lead levels, not to mention 28% of whey and 26% of collagen protein powders.

Organic powders averaged three times more lead than non-organic products, (while plant-based powders also contained five times more cadmium than whey-based powders).

Researchers Also Found Copper in Commercial Beef Protein Powder

In another relevant 2025 study, researchers purchased 22 commercially available protein powders, including whey, vegan and beef-based products, and analyzed them.

One of the products — Sample 16 — was a beef-based protein powder.

Its copper concentration was: 2.580 mg/kg — approximately 2.58 ppm copper.

It also contained:

Aluminum: 6.078 ppm
Manganese: 3.179 ppm
Rubidium: 5.750 ppm

Interestingly, the beef protein’s 2.58 ppm copper falls directly within the 1.86–3.85 ppm copper range found in the bovine-hide gelatin study.

That does not prove that this particular beef protein was manufactured from cattle hide.

But the similarity is certainly noteworthy.

Most importantly, it independently establishes something: A finished commercial beef protein powder has been laboratory tested and found to contain measurable copper and other toxic metals.

Other Protein-Powder Testing Has Found Copper, Too

This isn’t the only research finding copper in commercial protein supplements.

For example, another study found copper concentrations ranging from: 1.05 to 5.51 mg/kg.

These weren’t necessarily beef or collagen powders, so they shouldn’t be used to establish the copper content of bovine collagen specifically.

But the study reinforces a broader point: Protein powders can contain measurable copper even though copper often isn’t disclosed to consumers on the product label.

How Much Copper Would the Tested Beef Protein Provide?

At 2.58 mg/kg, a 20-gram serving of the tested beef protein would provide approximately: 0.052 mg, or 52 micrograms, of copper.

A 20-gram serving of the highest-copper bovine-hide gelatin tested (3.85 ppm) would provide approximately: 0.077 mg, or 77 micrograms, of copper.

These aren’t enormous quantities when considered in isolation.

But people often consume collagen and protein powders every single day, sometimes using multiple scoops. Or, they use protein powder in addition to getting copper in one or more of their supplements, or from their daily food staples.

Whether unaware of the moderate copper dose or deliberately trying to minimize copper exposure, the important point is that these products should not automatically be considered copper-free simply because copper doesn’t appear on the Nutrition Facts panel.

The Collagen Industry Actually Has a Specification for Copper

This oversight became even more interesting when I looked beyond retail supplement companies and into the collagen manufacturing industry itself.

The Gelatine Manufacturers of Europe (GME) Collagen Peptides Monograph specifically includes copper among its elemental specifications for edible collagen peptides.

Its maximum specification is: Copper: ≤30 mg/kg (30 ppm).

The same paper lists specifications for other elements including arsenic, lead, zinc, chromium, mercury and cadmium.

This does not mean typical collagen contains 30 ppm copper. A specification limit is not the same thing as an average measured concentration.

But it tells us something important: Copper is a recognized element within the collagen manufacturing industry.

And 30 ppm is substantially higher than the approximately 2–4 ppm found in the bovine-hide gelatin experiment.

At the maximum 30 ppm specification, a 20-gram serving would contain 0.60 mg of copper.

Again, that doesn’t tell us that retail collagen powders actually contain this amount. But it raises our awareness, and it demonstrates why finished-product testing matters.

Yet Most Collagen Companies Don’t Tell Consumers the Copper Content

I looked for copper testing from a number of major collagen and beef-protein companies.

The pattern was surprisingly consistent.

Companies frequently advertise testing for the four elements consumers have been taught to worry about:

Lead.
Cadmium.
Arsenic.
Mercury.

But copper usually isn’t reported.

For example, Perfect Supplements publishes its testing information here and specifically states that its heavy-metal test measures: Mercury, cadmium, lead and arsenic.

Copper isn’t included.

I also personally contacted Perfect Supplements, and the company confirmed to me that they do not test their collagen for copper.

Similarly, Great Lakes Wellness says that every batch is tested by an independent third-party laboratory, but I could not find a finished-product copper concentration published in its consumer testing information.

I could not locate publicly reported finished-product copper concentrations for major collagen products from companies including:

Vital Proteins
Sports Research
Great Lakes Wellness
Further Food
Orgain
Ancient Nutrition

The absence of a public result does not establish that these companies never test copper internally. But nothing is available for the public to determine their exposure.

“Heavy Metal Tested” Doesn’t Necessarily Mean Copper Was Tested

This is an important distinction for consumers. A company can advertise extensive heavy-metal testing while never measuring copper at all.

Copper is an essential trace element, so it isn’t normally grouped with the four toxic metals supplement companies emphasize.

But essential doesn’t mean unlimited, nor does it mean that copper content is irrelevant to someone intentionally limiting copper intake.

If you’re concerned about copper, don’t simply ask: “Do you test for heavy metals?”

Ask: “Do you perform ICP-MS or ICP-OES testing of the finished product for elemental copper (Cu), and what was the result in mg/kg or ppm for your most recent lot?”

That question is much harder to answer with a generic marketing statement.

Beef Protein Powder Isn’t “Meat” in the Way Most People Think of Meat

The biggest takeaway from this investigation isn’t only the copper.

It’s what these products actually are.

When we hear: bovine collagen, beef protein, beef protein isolate, beef hydrolysate, it’s very easy to imagine muscle meat.

In reality, they’re tissues that contain toxic heavy metals, including copper, lead and nickel.

Conclusion: Collagen, Gelatin and Beef-Derived Protein Powders Can Be Sources of Copper

Until companies provide both source-tissue declarations and finished-product copper testing, consumers who are trying to limit copper have good reason not to assume that collagen, gelatin or beef-derived protein powders are copper-free — or that a scoop of “beef protein” is simply powdered beef muscle.

It’s not unreasonable to conclude that consuming these powders daily may also mean getting a regular dose of toxic heavy metals you never bargained for.