Home › Protein Powder › NSF Certified for Sport
Latest four-week snapshot through 2026-07-22 · 4 waves. Use the controls above to change the window.
Protein Powder · 4 waves · n=384 answers, pooled
How often each assistant brings the brand up in recommendation answers.
| assistant | share of voice | answers |
|---|---|---|
| ChatGPT | 0% | 0 of 128 |
| Claude | 6% | 8 of 128 |
| Gemini | 1% | 1 of 128 |
Wave-by-wave share of recommendation answers that named this brand.
| wave | share of voice | answers | change |
|---|---|---|---|
| 2026-07-16 | 4% | 1 of 24 | |
| 2026-07-22 | 2% | 2 of 120 | -2 points |
| 2026-07-22 | 3% | 3 of 120 | +1 points |
| 2026-07-22 | 3% | 3 of 120 | +0 points |
20 exact quoted mentions in this snapshot, grouped by coded tone.
“if you're a competitive athlete subject to drug testing or want gold-standard verification, spend more on a brand with NSF Certified for Sport or Informed Sport certification instead”
“premium NSF Certified for Sport or Informed Choice brands are a safer bet”
“For everyday use, I'd lean toward a protein powder with a recognized independent certification such as NSF Certified for Sport”
“stronger **product-level** certifications such as USP Verified, NSF Certified for Sport, or Informed Choice”
“not broadly sold under programs such as USP Verified or NSF Certified for Sport, which add product-specific oversight”
“independent labs—like NSF Certified for Sport”
2 of 25 mentions appear alongside an identifiable web citation. Citation does not establish causation.
| cited source | mentions |
|---|---|
| garagegymreviews.com | 2 |
Method: fixed shopper questions asked repeatedly to Claude, OpenAI GPT and Gemini with web search on. Shares are the percentage of recommendation answers mentioning the brand. Quotes are AI outputs; full transcripts are kept as receipts.