Genesis 9:4. To eat a limb torn from a live animal is unspeakably cruel.
There are numerous diagnosis tools for any medical condition, all partially specific and reliable. Most of the time several tests are used and it is their consistency of results which help to approach a final diagnosis. In some areas of medicine, cancers for example, doctors focus heavily -close to blackmailing- on biopsies of living tissues of the body -in ambulatory, pre-op care- as a gate opener to treatment, surgery and other. I am not thinking of biopsies carried out during an operation on the sick organ being removed.
Would I be justified on moral ground (conscience objection) based on Torah, to reject any detachment of a piece of limb like a biopsy, and claim my right to diagnosis and treatment, and even pushing carers to search for more relevant non-invasive tools of disease management indirectly ?
Anybody has a halachic knowledge of this situation, and anybody has the practical experience of doing that ?