I second this advice from helen, we had a guinea pig with a very severe & far-gone case of stones before we realised there was anything going on & it never stopped him from weeing or blocked his urine. In fact at x-ray it was shown that the stones were in his kidneys so wouldn't have interfered with his mechanical ability to urinate at all.
We needed x-ray & bloods (to test kidney function) to diagnose our guinea properly & we had this done at an exotics vet with a speciality in small mammals. If your vet is a general vet rather than exotics, I would as them to refer you on or just find an exotics vet yourself. I would only have these type of tests or any dort of anaesthetic done on our piggies by our exotics vet, the general practics vets just don't see enough guineas to have the required experience.
Best wishes to McMac
We needed x-ray & bloods (to test kidney function) to diagnose our guinea properly & we had this done at an exotics vet with a speciality in small mammals. If your vet is a general vet rather than exotics, I would as them to refer you on or just find an exotics vet yourself. I would only have these type of tests or any dort of anaesthetic done on our piggies by our exotics vet, the general practics vets just don't see enough guineas to have the required experience.
Best wishes to McMac