Whey and whey isolate comparison
Bare Performance Nutrition Grass-Fed Whey Protein Isolate vs Transparent Labs 100% Grass-Fed Whey Protein Isolate
Transparent Labs Whey scores higher on our standard, 90/100 to 81/100. It earns more points for sugar (1 g vs not verified), protein density (80% vs 79% protein by weight) and verified label data (7 vs 6 of 7 label values), while BPN Whey Isolate earns more for third-party testing (NSF Certified for Sport vs Informed Choice and Informed Protein). Per 25 g of protein, BPN Whey Isolate costs $2.60 and Transparent Labs Whey $1.93.
Both are scored out of 100 against our published standard: protein density, third-party testing, label transparency, sugar, ingredient simplicity and verified label data. Every number below is from the manufacturer's label; last checked 2026-10-13.
Bare Performance Nutrition
Grass-Fed Whey Protein Isolate
Transparent Labs
100% Grass-Fed Whey Protein Isolate
Side by side
Per serving, from each label. Bold marks the better score, protein density, sugar and cost where the two differ. How we score
| Compared | BPN Whey Isolate | Transparent Labs Whey |
|---|---|---|
| Our score | 81/100 | 90/100 (better) |
| Protein density | 22 / 3079% of each scoop is protein | 30 / 30 (better)80% of each scoop is protein |
| Third-party testing | 25 / 25 (better)Lot-tested for banned substances | 15 / 25Independently tested for contaminants or label accuracy |
| Label transparency | 20 / 20Fully disclosed formula, no amino spiking | 20 / 20Fully disclosed formula, no amino spiking |
| Sugar | 0 / 10Sugar not verified | 10 / 10 (better)1 g sugar per serving |
| Ingredient simplicity | 10 / 10Natural flavors and sweeteners | 10 / 10Natural flavors and sweeteners |
| Verified label data | 4 / 56 of 7 label values verified | 5 / 5 (better)7 of 7 label values verified |
| Type | Whey Isolate | Whey Isolate |
| Protein per serving | 25 g | 28 g |
| Serving size | Approximately 1 scoop (31.6 g) | 1 Scoop (34.9g) |
| Protein by weight | 79% | 80% (better) |
| Sugar | Not verified | 1 g |
| Calories | 120 | 130 |
| Cost per 25 g protein | $2.60 | $1.93 (better) |
| Price per serving | $2.60 | $2.17 |
| Third-party certifications | NSF Certified for Sport | Informed Choice, Informed Protein |
| Sweeteners | Steviol Glycosides (Rebaudioside M) | Stevia Extract |
| Allergens | Milk | Milk |
| Proprietary blend | No | No |
| Added free amino acids (amino spiking) | No | No |
| Last checked | 2026-10-13 | 2026-10-13 |
Which to choose
Only the differences in our records. A value we couldn't verify never counts as a difference.
Choose BPN Whey Isolate if…
- You want a powder lot-tested for banned substances (NSF Certified for Sport).
Choose Transparent Labs Whey if…
- You want more protein per serving (28 g vs 25 g).
- You want to pay less per 25 g of protein ($1.93 vs $2.60).
- You want a powder the brand labels non-gmo (our record for BPN Whey Isolate has no such label).
- You want more flavors to choose from (22 vs 3).
The two powders
Good to know
Labels and prices change, so check the package before buying, especially if you have allergies. If you are pregnant, nursing, buying for a child or managing a health condition, ask your doctor before adding a supplement.