What is the osmolarity of central parenteral nutrition?
                                
                                
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                                    4 min read                                
                            
                                The typical osmolarity for central parenteral nutrition (CPN) is significantly higher than that of blood, often ranging from 1800 to 2400 mOsm/L. This hypertonic concentration is what distinguishes it from peripheral parenteral nutrition (PPN) and necessitates its delivery into a large, central vein for safe infusion.