Abstract
A preparation of a highly purified monoclonal antibody was subjected to capillary electrophoretic determination. Through the use of multiple parallel capillaries it was possible to increase both the detector response and sample load in direct proportion to the number of capillaries. While the amount of antibody solution assessed by ultraviolet detection was in the range of tenths of μg ml
−1, values in the range of tenths of ng ml
−1 were obtained using fluorescence detection. The results are discussed in terms of their practical values for biological samples, targeted for human consumption as pharmaceutical drugs.