Real ChatGPT answer · index seedtHwUlWAh8XEcompleteHealth and wellness · supplements and vitaminscomparison

Where can I find independent third-party purity testing results for the cheapest generic vitamins sold at major warehouse clubs like Costco?

ChatGPTgpt-64 queries10/31/2026
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Fan-out diagram

The searches the AI actually ran for this prompt.

SEED QUERY
Where can I find independent third-party purity testing results for the cheapest generic vitamins sold at major warehouse clubs like Costco?
4 real searches · 1 real-search pass
Costco Kirkland Signature vitamins third party testing USP verified ConsumerLab test results purityGoogle ↗
OBSERVED
warehouse club generic vitamins third party testing Kirkland Member's Mark Nature Made USP verified NSF ConsumerLabGoogle ↗
OBSERVED
USP Verified dietary supplements what tests verify ingredients contaminants officialGoogle ↗
OBSERVED
NSF dietary supplement certification testing contaminants officialGoogle ↗
OBSERVED

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.

Classifying 4 queries…

Searches and sources

ChatGPT4 real searches · gpt-6
Costco Kirkland Signature vitamins third party testing USP verified ConsumerLab test results purity Google ↗
warehouse club generic vitamins third party testing Kirkland Member's Mark Nature Made USP verified NSF ConsumerLab Google ↗
USP Verified dietary supplements what tests verify ingredients contaminants official Google ↗
NSF dietary supplement certification testing contaminants official Google ↗

Queries

4 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
Costco Kirkland Signature vitamins third party testing USP verified ConsumerLab test results purity
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1
warehouse club generic vitamins third party testing Kirkland Member's Mark Nature Made USP verified NSF ConsumerLab
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1
USP Verified dietary supplements what tests verify ingredients contaminants official
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1
NSF dietary supplement certification testing contaminants official
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1