The 90 % confidence intervals for the area under the concentration-time curve from time zero to the last quantifiable concentration ( AUC ( last ) ) , area under the concentration-time curve from time zero to infinity ( AUC ( 0 - ) ) and maximum plasma concentration ( C ( max ) ) of cinacalcet were within the accepted range of 80-125 % for both CaCO ( 3 ) and sevelamer HCl co-administration with cinacalcet .