the serial study demonstrated in the same patient , variations larger than 2 standard deviations in 25,8 % of the assays for c3 , 25,0 % for c4 and 27,2 % for c3pa , what may possibly indicate the great instability of the complement system which depends on a function , consumption or activation and synthesis relation , having to be taken into consideration in those assays comprehending the quantitative study of the seric complement fractions .
C0033453
c3pa
C0009498
complement