When using a wing tip the order of draw for a CBC Ptt and chemistry panel is lite blue SST and lavender do you need a clearing tube first?

Yes, when using a winged infusion set (wing tip), it is recommended to use a clearing tube before drawing a light blue (sodium citrate) tube, SST (serum separator tube), and lavender (EDTA) tube. The clearing tube, typically a non-additive tube, helps to prevent contamination from the winged set and ensures accurate test results. This practice is essential for maintaining the integrity of the samples for coagulation and hematology tests.