What is the correct order of draw when using a butterfly needle?

The correct order of draw when using a butterfly needle is important to prevent cross-contamination of additives. The typical order is: 1) blood culture bottles (if applicable), 2) light blue top (sodium citrate), 3) red top (no additive), 4) gold or tiger top (serum separator), 5) green top (heparin), and 6) lavender or pink top (EDTA). Always refer to specific guidelines or protocols, as variations may exist based on laboratory standards.