A blood test tomorrow morning without a referral. Where can I book?
What ChatGPT and Gemini answered when asked this in Madrid dentists, clinics and vets on 2026-10-21, with web search on. Below are the places named, who named each one, and the direct link where the place has one.
| Place | Named by | Direct link |
|---|---|---|
| Centro Médico M. Saldaña | ChatGPT with its own site | centromedicomsaldana.es |
| Eurofins Megalab not in the index | Gemini with its own site | eurofins-megalab.com |
| Lab Durán Bellido not in the index | Gemini with its own site | laboratoriodeanalisisclinicos.com |
| Laboratorio Echevarne not in the index | Gemini with its own site | laboratorioechevarne.com |
| Laboratorio Torrejon | ChatGPT with its own site | torrejonlab.com |
| Nurdoc not in the index | ChatGPT through a directory | directory only |
How this is read
Each assistant was asked each question once, with web search on, for up to three places and the link to each one's own website. Names are read from the answer and matched against the index. Any link between one name and the next belongs to that place. "With its own site" means the assistant linked the place's own website. "Through a marketplace" or "a directory" means it linked a listing instead, and "by name" means it gave no link. The direct links come from the Direct Index's own scan of the place's site. The assistant didn't supply them.
Every question for Madrid dentists, clinics and vets · Where assistants send people in Madrid dentists, clinics and vets.