PPN concentrations are limited to $8.5-1.5 \%$ amino acids, $20-70 \%$ dextrose, and $20 \%$ lipids.

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PPN (Peripheral Parenteral Nutrition) concentrations are typically limited to lower concentrations due to the risk of phlebitis and other complications. For amino acids, the concentration is usually up to 3%; for dextrose, it can go up to 10% to avoid vein irritation; and for lipids, it's not limited by concentration but by the rate of infusion and total daily dose due to the risk of fat overload syndrome and other complications. The stated concentrations are more characteristic of Central Parenteral Nutrition (CPN), which is administered through a central vein that can tolerate higher osmolarity solutions.

PPN Concentrations Are Limited To 8.5−1.5%8.5-1.5 \%8.5−1.5% Amino Acids 20−70%20-70 \%20−70% Dextrose, And

PPN Concentrations Are Limited To $8.5-1.5 \%$ Amino Acids $20-70 \%$ Dextrose, And