Tube type Cap Colour Ring Colour Tube Contents
4 mL sodium fluoride / potassium oxalate tube Grey Black Sodium fluoride / potassium oxalate

4 mL Sodium Fluoride Tube


Label the specimen with:

  • Surname
  • Forename
  • Date of birth (not age) OR unique identity number (MRN number, NHS number)

For further information, see: Pathology policy for specimen and request form labelling for pathology users