Ferric citrate increased hemoglobin levels ( from @ @ to @ @ g/dL ; P < @ vs placebo ) , reduced urinary phosphate excretion @ % ( P < @ vs placebo ) , and reduced serum intact FGF-@ levels from a median of @ ( IQR , @-@ ) to @ ( IQR , @-@ ) pg/mL ( P = @ vs placebo ) .