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- Apply the tourniquet
- Find the vein
- Disinfect the puncture site
- Insert the needle
- Remove the tourniquet as soon as you have reached the vein (1st tube)
Take the tubes in the following order:
- Blue (Citrate)
- Orange (serum)
- Green (Heparin)
- Purple (EDTA)
- Grey (Fluoride)
- Dark blue (K2 EDTA, metal)
Label the tubes at the patient’s bedside/in the phlebotomy room.
Send the tubes to the laboratory; for preservation conditions see the appropriate procedure.