What are the most cost-effective plant-based protein powders that have zero heavy metal contamination according to the latest independent lab testing reports?
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Fan-out diagram
The searches the AI actually ran for this prompt.
SEED QUERY
What are the most cost-effective plant-based protein powders that have zero heavy metal contamination according to the latest independent lab testing reports?
1 real search · 1 real-search pass
latest 2025 2026 independent lab testing plant based protein powders heavy metals lead cadmium arsenic mercury Consumer Reports Clean Label Project reportGoogle ↗
OBSERVEDReason
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
ChatGPT real searches (1)
Classes come from the query-classifier (a local Laya model). 1 of 1 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.
Searches and sources
ChatGPT1 real searches · gpt-6
latest 2025 2026 independent lab testing plant based protein powders heavy metals lead cadmium arsenic mercury Consumer Reports Clean Label Project report Google ↗
- CR Tested These Protein Powders. All Had Low Levels of Lead. · consumerreports.org
- CR Tested These Protein Powders. All Had Low Levels of Lead. · consumerreports.org
- Protein powder comparison: heavy-metal lab reports and cost per 25 g protein (UK + EU) · cleanassay.com
- Cleanest protein powder in the UK and EU (heavy-metal lab reports, 2026) · cleanassay.com
- Protein Powder v2 Category Tested Products · cleanlabelproject.org
- 2560365_CLPSweet 16OneSheeter_030325 · cleanlabelproject.org
- Nearly Half of Top-Selling Protein Powders Exceed Safety Thresholds for Heavy Metal Contamination · cleanlabelproject.org
- CleanLabelProject_ProteinStudyWhitepaper_010825 · cleanlabelproject.org