...thnx for the info, I dont know yet about the lab ranges because this test info was relayed to me by phone. The printout is being mailed so I will have more info. when that arrives. The lab I used was LabCorp ,I purchased the tests myself ,mainly due to my sudden neuropathy. My neuro dx me as having small fiber polyneuropathy just a few weeks ago. The neuro seems to think it's due to Diabetes..the catch is I have been diabetic for two months ! Granted, my glucose levels were pre-diabetic the year before ,but the neuropathy puzzle just began one month ago. My argument with my gp and neuro is thats a damn fast case of neuropathy! Sooo. I am looking for clues before my next neuro visit. I have already found that once you're tagged diabetic ,the medical folks seemed to think everything you have is related to glucose. Thanx again..