Klean Athlete Klean Isolate
Professional and Olympic athletes who need NSF-certified protein with pharmaceutical-grade purity
Transparent Labs 100% Grass-Fed Whey Protein Isolate
Ingredient-conscious consumers who want full label transparency with grass-fed whey isolate
Score Comparison
Pricing & Features
Making Your Decision
When to Choose Klean Athlete Klean Isolate
Professional and Olympic athletes who need NSF-certified protein with pharmaceutical-grade purity
Klean Athlete is purpose-built for competitive athletes who cannot risk contamination. NSF Certified for Sport plus pharmaceutical-grade manufacturing standards make it one of the safest protein powders available. The unflavored single-ingredient option is ideal for purists.
Strengths
- NSF Certified for Sport — trusted by Olympic and professional athletes
- Single-ingredient unflavored option available for maximum purity
- Made by supplement industry leader (Atrium Innovations) with pharmaceutical-grade standards
Limitations
- Flavored options (Vanilla, Chocolate, Strawberry) are less sweet than mainstream competitors
- Only 20 servings per pouch at $2.20/serving is expensive
- Limited retail availability — primarily sold through specialty channels
When to Choose Transparent Labs 100% Grass-Fed Whey Protein Isolate
Ingredient-conscious consumers who want full label transparency with grass-fed whey isolate
Transparent Labs lives up to its name with full-disclosure labeling and zero proprietary blends. The grass-fed whey isolate delivers 28g protein per serving with clean ingredients. While it lacks NSF certification, the published independent lab results provide strong purity assurance.
Strengths
- Fully transparent label with every ingredient amount disclosed — no proprietary blends
- Grass-fed whey isolate with 28g protein per serving and no artificial additives
- Independently tested with published lab results for purity verification
Limitations
- Not NSF Certified for Sport — uses independent lab testing instead
- At $2.00/serving, positioned above many budget alternatives
- Only available direct-to-consumer and Amazon — no retail store presence
