Is Huntington's Disease hereditary? Is it advisable to carry out the genetic test?

Is Huntington's Disease hereditary?
What blood test (and its cost) should be carried out to check for the presence of huntington’s disease?
Thank you

Huntington's Disease is hereditary: each child has a 50% chance of inheriting the mutated gene from the parent who carries it. Genetic testing on DNA is carried out by means of a blood sample and is free of charge if carried out at a center accredited by the National Health Service. However, it is necessary to emphasize the need to perform the test in centers with experience on the disease, which provide an accompanying path with the multidisciplinary support of specific professionals (neurologist, psychologist, geneticist). The onset of the disease in the future can be predicted, but it is not yet possible to prevent or know when exactly the disease will occur. The choice to undergo the test is, therefore, strictly personal and must be taken in full knowledge and awareness of the disease and its implications, about themselves and their families. If you want to come and visit us to better clarify your ideas, we will be happy to answer all your questions and also to tell you what’s the state of the art of research. Toll-free number 800.388.330.