Transparent Labs Mass Gainer Chocolate Peanut Butter
Summary
Transparent Labs Mass Gainer Chocolate Peanut Butter scores 67/100 — the cleanest mass gainer commercially available. 770 calories from 100% grass-fed whey protein concentrate (53 g protein), organic tapioca maltodextrin, oat flour, sweet potato powder, MCT oil, coconut milk powder, and 3 g creatine, sweetened with stevia + monk fruit. No artificial sweeteners, no artificial colors, no artificial flavors, no soy, no gluten. Independent third-party lab testing (Consumer Reports, January 2024) detected 0.43 mcg lead and 0.52 mcg arsenic per serving — both at trace levels. Cadmium and mercury not detected. Owned by Transparent Labs.
At a glance
Contaminants 4
Source: Consumer Reports January 2024
Lead 0.43 mcg per serving Low
Detected at a low level — within health-based exposure limits set by regulators such as the FDA, EPA, and EFSA, though above trace. Not an acute concern at typical use, but lower is always better for this substance. Treated as a trace finding rather than a contamination flag at this exposure level.
Consumer Reports January 2024 detected 0.43 mcg lead per serving.5 mcg/day — at trace levels.
Cadmium not detected Not detected
Not detected — below the laboratory's detection limit. This is the strictest possible result: no measurable amount was found.
Consumer Reports January 2024 reported cadmium below the lab's threshold of detection — no cadmium measurable in this product.
Arsenic 0.52 mcg per serving Low
Detected at a low level — within health-based exposure limits set by regulators such as the FDA, EPA, and EFSA, though above trace. Not an acute concern at typical use, but lower is always better for this substance. Treated as a trace finding rather than a contamination flag at this exposure level.
Consumer Reports January 2024 detected 0.52 mcg arsenic per serving— at trace levels.
Mercury not detected Not detected
Not detected — below the laboratory's detection limit. This is the strictest possible result: no measurable amount was found.
Consumer Reports January 2024 reported mercury below the lab's threshold of detection — no mercury measurable in this product.
Key ingredients 13
100% Grass-Fed Whey Protein ConcentrateVery Good
Premium grass-fed whey from cows raised on pasture — higher omega-3 to omega-6 ratio and CLA content vs grain-fed whey. Complete amino acid profile, high bioavailability, and minimally processed. Delivers 53 g protein per serving.
See more about 100% Grass-Fed Whey Protein Concentrate →Organic Tapioca MaltodextrinNeutral
USDA Organic tapioca-derived maltodextrin used as the carbohydrate base. Same high glycemic profile as commodity maltodextrin but tapioca-sourced and organically certified — a meaningfully cleaner pick within the maltodextrin category.
See more about Organic Tapioca Maltodextrin →Oat FlourGood
Whole-grain carbohydrate source providing fiber and a slower-release carb component than pure maltodextrin. A genuinely beneficial whole-food inclusion in a mass gainer.
See more about Oat Flour →Sweet Potato PowderVery Good
Whole-food carbohydrate source providing fiber, beta-carotene, and complex carbs with a lower glycemic impact than maltodextrin. A standout inclusion in a mass-gainer category dominated by maltodextrin.
See more about Sweet Potato Powder →Soluble Tapioca Fiber (VitaFiber®)Good
Prebiotic fiber from tapioca that supports gut microbiome diversity and adds 6 g fiber per serving.
See more about Soluble Tapioca Fiber (VitaFiber®) →Coconut Milk PowderNeutral
Spray-dried coconut milk for creaminess; provides medium-chain fats.
See more about Coconut Milk Powder →Medium Chain Triglycerides (MCT)Good
Coconut-derived MCTs that are rapidly absorbed for energy. A genuinely beneficial fat source in a high-calorie mass gainer.
See more about Medium Chain Triglycerides (MCT) →Creatine MonohydrateVery Good
Most-researched ergogenic supplement on the market. Robustly supports strength, power output, and lean mass gains. A genuinely beneficial inclusion in a mass gainer.
See more about Creatine Monohydrate →Cocoa PowderGood
Natural cocoa providing chocolate flavor plus polyphenol antioxidants. Notably, cocoa is also a known cadmium accumulator.
See more about Cocoa Powder →Natural FlavorsBad
Proprietary flavor blend; can hide dozens of synthetic aroma chemicals and phthalate carriers under FDA trade-secret rules.
See more about Natural Flavors →SteviaNeutral
Natural zero-calorie sweetener from the stevia leaf. No significant health concerns, but Scout treats all stevia forms as neutral — neither penalized nor counted as a beneficial ingredient.
See more about Stevia →Monk Fruit ExtractGood
Plant-derived zero-calorie sweetener; safer than synthetic sweeteners and pairs well with stevia to balance aftertaste.
See more about Monk Fruit Extract →Sea SaltGood
Unrefined sea salt — a minimally processed, natural source of sodium and essential trace minerals, and a legitimate whole-food seasoning. Treated as a positive ingredient.
See more about Sea Salt →Processing
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