"Diagnosing ATTR-CM typically involves an electrocardiogram, echocardiogram and blood tests. In some cases, more in-depth tests like a nuclear heart scan, which uses a small amount of radioactive material to create images of the heart, or a heart biopsy may be ordered. Asst Prof Lin added that the condition is more commonly found in the elderly and in individuals with a family history of ATTR-CM. Family screening can help identify carriers of the mutant gene who may develop the disease later in life."
Here is a good example of doctors blood sucking money from patients.
Gene testing is the easiest and cheapest with least disruption, yet they go round the block.