way back in 2003 after my PN was confirmed by emg/ncs, the first test Columbia Presbyterian in Manhattan wanted to do was a sural nerve biopsy.....this was before any blood tests, mri's etc would be ordered. this didnt sound right to me so i did some research and talked to people on an old version of a board like this and as a result ran from columbia presbyterian and went to a different neurologist. They were definitely cut happy, at least at that time.