Can You Draw Blood From PICC With TPN?
                                
                                
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                                    6 min read                                
                            
                                According to numerous medical guidelines, blood samples should never be taken from a central venous access device (CVAD) that is designated for total parenteral nutrition (TPN) feeding, unless blood cultures are required. This strict protocol, which dictates how you can draw blood from a PICC with TPN, is critical for patient safety and the accuracy of diagnostic testing.