--it would have to be done in your home; most genetic testing involves blood and/or skin cell sampling to look for genetic markers, and while some firms advertise that it can be done by you yourself taking samples at home and sending them in for analysis, such samples can just as easily be taken at an office or clinic.

It is true that many insurance companies are reluctant to pay for such genetic analyses, as, even with the cureent human genome project, the current state of knowledge is that many syndromes (i.e., celiac) are caused by a combination of various genetic factors interacting with environmental triggers, so except in directly transmitted conditions (such as hemophelia or Huntington's) such testing often reveals just a gentic "propensity".

Take a look at this material on inherited neuropathies, though:

http://www.neuro.wustl.edu/neuromuscular/time/hsn.htm

http://www.neuro.wustl.edu/neuromusc...html#cmtaracro


There's a ton of info here, and a surprisingly large number of conditions linked to specific mutations.