the 24-h urinary c-peptide measured on the same day as the serum profile was correlated ( p less than .01 ) with both the 24-h integrated serum insulin ( r = .69 ) and c-peptide ( r = .67 ) concentrations in control subjects but not in niddm subjects ( r = .20 and .04 , respectively , p ns ) .
C0006558
c-peptide
C0011849
niddm