Precision Engineered by Holland & Barrett -- Lab Test Results
Independent Certificates of Analysis aggregated from public lab results. Not affiliated with or paid by Precision Engineered by Holland & Barrett.
35
CoAs on file
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Avg reported purity
35
Compounds tested
--
Latest test
Results by compound
| Compound | CoAs | Avg purity | Latest |
|---|---|---|---|
| Tan Tablets | 1 | -- | |
| L Carnitine 500mg | 1 | -- | |
| Whey Protein | 1 | -- | |
| Overnight Whey Protein | 1 | -- | |
| Zma | 1 | -- | |
| Creapure | 1 | -- | |
| Electrolyte | 1 | -- | |
| Protein Flapjack | 1 | -- | |
| Effervescent Hydration Energy | 1 | -- | |
| Clear Protein | 1 | -- | |
| L Taurine 500mg | 1 | -- | |
| Essential Amino Acids | 1 | -- | |
| Performance Pre Workout | 1 | -- | |
| Cultures Complex Sport | 1 | -- | |
| Choline Inositol | 1 | -- | |
| Pure Creatine Monohydrate | 1 | -- | |
| N Acetyl Cysteine 600mg | 1 | -- | |
| Bcaa | 1 | -- | |
| Creatine Monohydrate 700mg | 1 | -- | |
| Plant Protein Bar | 1 | -- | |
| Performance Bcaa | 1 | -- | |
| L Glutamine 500mg | 1 | -- | |
| L Lysine 1000mg | 1 | -- | |
| Protein Bar | 1 | -- | |
| Cream Rice | 1 | -- | |
| L Tyrosine 500mg | 1 | -- | |
| Lean Protein | 1 | -- | |
| L Arginine 1000mg | 1 | -- | |
| Pump Zero Pre Workout | 1 | -- | |
| L Arginine 500mg | 1 | -- |
Top 30 of 35 compounds shown.
Recent CoAs
Showing 25 most recent of 35. Search the full database on the CoA page.
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<a href="https://ascendpeptide.org/coa/vendor/precision-engineered-by-holland-barrett/" rel="noopener"> <img src="https://ascendpeptide.org/coa/badge/precision-engineered-by-holland-barrett.svg" alt="Precision Engineered by Holland & Barrett: lab tested, 35 CoAs on file at ASCEND Peptide" width="230" height="54"> </a>
Data comes from publicly posted third-party lab certificates (Janoshik, MZ Biolabs, and others) and community submissions. Purity figures are as reported by the testing lab for the specific batch tested; they are not a guarantee of any other batch. For research and informational purposes only.