Which plant based protein powders have been recently tested and approved by independent labs for heavy metals and purity?
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Fan-out diagram
The searches the AI actually ran for this prompt.
SEED QUERY
Which plant based protein powders have been recently tested and approved by independent labs for heavy metals and purity?
1 real search · 1 real-search pass
2026 plant based protein powder independent lab tested heavy metals purity certification Clean Label Project NSF Informed Choice ConsumerLabGoogle ↗
OBSERVEDComparison
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
2026 plant based protein powder independent lab tested heavy metals purity certification Clean Label Project NSF Informed Choice ConsumerLab Google ↗
- CLPSweet 16OneSheeter_030325 · cleanlabelproject.org
- www.beyondmeat.com · beyondmeat.com
- 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
- Protein Powder v2 Category Tested Products · cleanlabelproject.org
- Nearly Half of Top-Selling Protein Powders Exceed Safety Thresholds for Heavy Metal Contamination · cleanlabelproject.org
- Protein Powders and Shakes Review & Top Picks · consumerlab.com