I’m not aware of vets routinely scanning animals that are brought to them for care. They might do it if the person bringing them indicates that they found the animal.
This should probably asked of a good vet - I’m not sure we have one here on FR.
I don’t know...think the doc needs a warrant....privacy issue.
vets routinely scanning animals that are brought to them for care
In today’s day and age, standard of care for any animals includes recording any and all permanent identification, including microchips, tattoos, brands, eartags, especially for any animal presented for a health certificate (OCVI- Official Certificate of Veterinary Inspection). As a Standard of Practice, veterinary clinics should scan any new patients and add information to a permanent health record. Horsedogcatcowchicken, etc.
If a microchip is found, due diligence is to discover the registry and correct owner. Discovery of lost or missing animals, theft, and abuse is an added benefit.
For OFA tests they do.