Klean Isolate
Klean Athlete Klean Isolate is a whey isolate protein powder with 20 g of protein per 1 scoop (22.3 g). It scores 99/100 on the TBPP Quality Score. It is NSF Certified for Sport.
Nutrition per serving
Unflavored flavor, from the label.
| Serving size | 1 scoop (22.3 g) |
|---|---|
| Protein | 20 g |
| Calories | 85 |
| Carbohydrates | 1 g |
| Sugar | 1 g |
| Fat | Not verified |
| Sodium | 30 mg |
| Protein by weight | 90% |
| Leucine | 2.075 g |
| BCAAs | 4.44 g |
How it scored
99 of 100 points. How we score
| Criterion | Points | Why |
|---|---|---|
| Protein density | 30 / 30 | 90% of each scoop is protein |
| Third-party testing | 25 / 25 | Lot-tested for banned substances |
| Label transparency | 20 / 20 | Fully disclosed formula, no amino spiking |
| Sugar | 10 / 10 | 1 g sugar per serving |
| Ingredient simplicity | 10 / 10 | Unflavored |
| Verified label data | 4 / 5 | 6 of 7 label values verified |
Formula and label
| Type | Whey Isolate |
|---|---|
| Protein sources | Whey Protein Isolate |
| Third-party testing | NSF Certified for Sport |
| Sweeteners | None listed |
| Proprietary blend | No |
| Added free amino acids | No |
| Dietary | Gluten-Free, Non-GMO |
| Allergens | Milk |
| Made by | Klean Athlete |
| Sold at | Amazon, Fullscript |
Price
We could not verify a current U.S. price.
Sizes: 15.73 oz (446 g, 20 servings), 20.5 oz (580 g, Natural Chocolate), single-serve pouches
Flavors (4)
- Unflavored
- Natural Chocolate
- Natural Vanilla
- Natural Strawberry
Sources
- https://api.ods.od.nih.gov/dsld/v9/label/232880
- https://api.ods.od.nih.gov/dsld/v9/search-filter?q=klean%20isolate&size=5
- https://www.nsfsport.com/certified-products/search-results.php?brand=Klean+Athlete
kleanathlete.com returned 403 on all fetches (2026-10-13) and shop.kleanathlete.com redirects to the Klean Athlete Amazon store, so no brand-site page could be read; official_url is the brand page seen in search results. Nutrition (Unflavored, formula KA57534P-446 V2: 22.3 g, 20 servings, 85 kcal, 1 g carbs, 1 g sugar, 20 g protein, 30 mg sodium, amino profile, ingredients whey protein isolate + sunflower lecithin, Contains: milk, gluten-free/non-GMO, NSF Certified Sport seal) from the NIH Dietary Supplement Label Database record 232880 (on-market), which reproduces the label. Fat not on label row, so null. NSF Certified for Sport confirmed on nsfsport.com (Klean Isolate unflavored, Chocolate, Vanilla, Strawberry). bcaa_g = sum of labeled leucine 2075 + isoleucine 1240 + valine 1125 mg. Price not verified.
Good to know
Last checked 2026-10-13. Labels change, so check the package before buying if you have allergies. If you are pregnant, nursing or buying for a child, ask your doctor before adding a supplement.