Third-party tested collagen peptides with disclosure

Jul 19 – Oct 20, 2026Updated Oct 20, 2026Reviewed by

How we measure

Which brands AI mentions

#BrandMentioned in
#1tiedSports Research34%
#1tiedVital Proteins24%
#1tiedVital Proteins Collagen Peptides, a product of Vital Proteins32%
#1tiedNAKED Nutrition24%
#1tiedTransparent Labs24%

Mentioned in

ChatGPTChatGPTGoogle AI ModeGoogle AI Mode

Widest split: Vital Proteins Collagen Peptides, 57% on ChatGPT and 5% on Google AI Mode.

Questions and answers

  • ChatGPTOct 20, 2026

    1. 1Great Lakes Wellness
    2. 2Vital Proteins Collagen Peptides
    3. 3Transparent Labs
    4. 4Perfect Supplements

    I found a few promising options, but there’s an important distinction: a collagen powder can be third-party tested without publicly disclosing its actual heavy-metal test results. For your criteria, I prioritized brands that disclose the collagen’s animal source, publish a full amino-acid profile, and provide measurable contaminant results—not just a “third-party tested” claim.

    Best candidates to investigate

    • Great Lakes Wellness - Walmart.com

    1. Great Lakes Wellness Collagen Peptides

    (Strong amino-acid transparency)

    Source: bovine collagen from cattle hides

    • Amino acids: Publishes quantities for 20 amino acids, including glycine, proline, hydroxyproline and lysine.

    • Testing: The company says every batch is tested by an independent, certified third-party laboratory.

    • Heavy metals: I could verify the testing claim, but not a public lot-specific report showing measured lead, cadmium, arsenic and mercury results.

      Sources: Official amino-acid and product information · Testing FAQ.

    • Vital Proteins Collagen Peptides Unflavored 567g

    2. Vital Proteins Collagen Peptides

    Source: bovine collagen; grass-fed and pasture-raised claims on the label

    • Amino acids: The product label lists a typical amino-acid profile with amounts per serving.

    • Testing: Certain products in the range are listed in NSF's dietary supplement certification database.

    • Heavy metals: I did not verify a publicly accessible lot-specific report with all four metals quantified for the standard powder.

      Sources: Product label and amino-acid profile · NSF listings.

    • Collagen vs Whey Protein Powder: Key Differences Explained – Transparent Labs

    3. Transparent Labs Collagen Hydrolysate

    (Promising heavy-metal disclosure)

    • Heavy metals: A recent review of the brand's published laboratory reports identifies results for arsenic, cadmium, lead and mercury in its chocolate collagen, including measured values and limits.

    • Amino acids: I could not establish from the report reviewed that a complete amino-acid profile is publicly disclosed for the same product.

    • Important: The cited report is for a particular chocolate-flavored lot, so it should not be treated as proof of the results for every flavor or batch.

      Source: 2026 third-party testing and report review.

    The two additional brands worth checking first

    • Transparent Labs Grass-Fed Collagen Peptides | Hydrolyzed Bovine Collagen | The Feed

    Transparent Labs Grass-Fed Collagen

    Its official website provides access to third-party product purity tests. The product is made from bovine hides and provides 22 g of collagen per serving. Published reports include actual heavy-metal measurements for specific lots and flavors, although a complete amino-acid breakdown still needs verification.

    Official product and testing page · Lab reports.

    • Perfect Hydrolyzed Collagen Unflavored, Pouch - Sourced EXCLUSIVELY From Brazilian Grass Pastured (Grass Fed) Cows

    Perfect Supplements Perfect Hydrolyzed Collagen

    The company publishes third-party testing information and heavy-metal results, including a historical laboratory certificate for lead. Its Brazilian grass-pastured bovine sourcing is also clearly described. I couldn't verify that a current lot has a publicly available complete four-metal panel alongside the full amino-acid profile.

    Official product and testing information · Example laboratory certificate.

    What I would require before buying

    For the strictest transparency standard, ask the manufacturer for these four items:

    • Source: Exact animal species and tissue used, such as bovine hide or wild-caught fish skin.
    • Amino-acid profile: All amino acids quantified, preferably in mg per serving or g per 100 g.
    • Heavy metals: A third-party certificate of analysis (COA) reporting numerical results for lead, cadmium, arsenic and mercury, with detection limits and acceptance limits.
    • Lot matching: The report should identify the same product and preferably the lot number on the tub you're buying.

    One caution: a certification logo or a “passed” statement is not the same as publishing actual metal concentrations. A historical test also cannot establish the results for the current production batch.

    My recommendation: Start with Transparent Labs if accessible numerical heavy-metal results are your priority, and Great Lakes Wellness if a detailed amino-acid profile is your priority. Neither is a fully verified match for all your criteria based on the public documents I could confirm.

    Sources cited in this answer18

    Google AI ModeOct 20, 2026

    1. 1CB Supplements
    2. 2Transparent Labs
    3. 3Great Lakes Wellness
    4. 4Sports Research

    Finding collagen powders that simultaneously offer third-party testing/certification, public heavy-metal results, and a declared amino-acid profile requires looking at brands that publish transparent Certificates of Analysis (COAs) or utilize rigorous athletic certifications (like NSF Certified for Sport).

    Because collagen is a uniform protein source, many brands print a typical amino-acid breakdown on the label or website, but fewer make batch-specific heavy metal lab results universally public without a direct customer service request.

    Prominent options meeting these criteria include:

    • CB Supplements (NSF Certified for Sport Multi-Collagen) : This brand features an NSF Certified for Sport Multi Collagen Peptides Powder line. They explicitly verify and disclose their product purity, matching protein content and amino acid profiles via independent analysis , alongside rigorous double-batch testing for heavy metals and banned substances.[2]
    • Transparent Labs : Known for their absolute label and testing transparency across their supplement lines, they utilize ISO/IEC 17025-accredited labs for heavy-metal testing via ICP-MS and make analytical testing standards and raw material vetting completely public. (Note: While primarily known for whey and plant proteins, check their active catalog or customer support for current collagen peptide availability if they rotate stock).
    • Brands with accessible Certificates of Analysis (COAs) : Many industrial-grade or clinical-grade brands (such as Great Lakes Wellness or Sports Research ) third-party test every batch for heavy metals (lead, arsenic, cadmium, mercury) to comply with stringent Prop 65 limits. While they may not feature the heavy metal lab results directly on the product packaging, their customer support teams readily supply the specific lot's Certificate of Analysis (COA) upon request, which includes exact heavy metal parts-per-billion (ppb) data alongside the standard amino acid breakdown.

    If you have a specific brand or budget in mind, or if you'd like me to show you how to read a Certificate of Analysis (COA) for heavy metals and amino acid ratios, let me know!

    Sources cited in this answer3

Also asked as

  • Can you list collagen supplements that undergo third-party testing and publish both their heavy metal analysis and amino acid breakdown?
  • Can you recommend collagen powders that are third-party tested and provide full transparency on their amino acid profiles and heavy metal testing?