Blood test – Instructions

  • 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.

SYNLAB Belgium SC/SPRL | Avenue Alexander Fleming, 3 - 6220 Heppignies | Téléphone : (067) 89 54 32 | TVA: BE 0453 111 546



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