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Best Protein Powder

PureBulk

Whey Protein Isolate 90% (USA)

PureBulk Whey Protein Isolate 90% (USA) is a whey isolate protein powder with 28 g of protein per 30 g (6 1/2 Tbsp). It scores 64/100 on the TBPP Quality Score. We found no third-party testing certification.

No third-party testing foundNo sweeteners
Our score
64/100
Methodology v1.0
Protein
28g
30 g (6 1/2 Tbsp)
Sugar
—
Per serving
Protein by weight
93%
Price
—
Not verified

Nutrition per serving

Unflavored flavor, from the label.

Nutrition per serving
Serving size30 g (6 1/2 Tbsp)
Protein28 g
Calories112
Carbohydrates1 g
SugarNot verified
Fat0.4 g
Sodium62 mg
Protein by weight93%
LeucineNot verified
BCAAsNot verified

How it scored

64 of 100 points. How we score

CriterionPointsWhy
Protein density30 / 3093% of each scoop is protein
Third-party testing0 / 25No verified independent testing program
Label transparency20 / 20Fully disclosed formula, no amino spiking
Sugar0 / 10Sugar not verified
Ingredient simplicity10 / 10Unflavored
Verified label data4 / 56 of 7 label values verified

Formula and label

Formula and label
TypeWhey Isolate
Protein sourcesWhey Protein Isolate
Third-party testingNone found
SweetenersNone listed
Proprietary blendNo
Added free amino acidsNo
DietaryGluten-Free, Soy-Free
AllergensMilk
Made byPureBulk · USA
Sold atPureBulk

Price

$46.25–$83.50 for 1 kg.

Sizes: 500 g, 1 kg

Flavors (1)

  • Unflavored

Sources

Nutrition from the brand page's Supplement Facts panel (30 g serving: 112 kcal, total fat 0.4 g, cholesterol 6 mg, sodium 62 mg, potassium 165 mg, total carbohydrates 1 g, protein 28 g, calcium 135 mg, phosphorus 66 mg, magnesium 24 mg); the panel lists no sugar line, so sugar_g is null. The same page's marketing comparison table gives different figures (111 kcal, 25 g protein), and the panel itself says 'supplement facts may vary from the product you receive', so treat the numbers as approximate. Other ingredients: whey protein isolate, sunflower lecithin (emulsifier); contains milk. The brand describes it as cold, micro-filtered, made in the USA and standardized to at least 90% protein, and says it is lab-tested by accredited third-party US labs (COAs on request); this is not a certification program. Prices are from the brand store's product data on 2026-10-13: 500 g $46.25, 1 kg $83.50. Servings per container 'Varies'. Dietary Gluten-Free and Soy-Free added on re-verification 2026-10-14 from the brand page free-from labels (brand claims, not certifications).

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.