Erythrocyte long-chain n-3 PUFA content following treatment was significantly higher for participants in the arm receiving fish oil than for those in the arms receiving RUTF with elevated short chain n-3 PUFA or standard RUTF alone : 3 months after enrollment , DHA content was 6.3 % ( interquartile range 6.0-7 .3 ) , 4.5 % ( 3.9-4 .9 ) , and 3.9 % ( 2.4-5 .7 ) of total erythrocyte fatty acids ( P < 0.001 ) , respectively , while eicosapentaenoic acid ( EPA ) content was 2.0 % ( 1.5-2 .6 ) , 0.7 % ( 0.6-0 .8 ) , and 0.4 % ( 0.3-0 .5 ) ( P < 0.001 ) .