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Re: [IP] Re: C-peptide

That's all very interesting Linda. But, what do you meen by a positive and 
negative C-peptide result? Number-wise, I mean?

Sue (dalgal)

email @ redacted

>Subject: [IP] Re: C-peptide
>Date: Sat, 1 Dec 2001 22:41:56 EST

>First, Dr. Harlan at NIH talking about follow-up studies on the DCCT
>participants.  As I recall his lecture, essentially negative c-peptide 
>was a requirement for participation in the study.  Later, when more 
>c-peptide tests became available, some of the participants were found to 
>some c-peptide (and therefore some insulin production).  The people in this
>group were less likely to have complications.
>Second, in order to qualify for a protocol at NIH, a c-peptide test was
>required.  When I expressed skepticism about the possibility of being
>positive after 46 years of juvenile-onset diabetes, I was told that they 
>had several cases of very long term diabetes with a positive c-peptide.
>But, having worked in a medical lab for a short while years ago, I would
>never discount the possibility of an incorrect result, either.  A woman I
>spoke to recently, who had been in the above protocol but later had to be 
>go because repeats of the c-peptide test were showing positive, probably 
>initially had an incorrect negative result

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