How does the sampling for the dry blood card work?

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  • We recommend using more than one finger for sampling and warming the hands under warm water beforehand to stimulate blood circulation.
  • You can also improve blood circulation by circling your arm and using a dry brush.
  • Please also make sure to drink plenty of water before taking the blood sample.
  • Avoid direct skin contact with the areas marked for blood collection.
  • The blood sample for the dry blood card is taken with a lancet (a small pricking instrument). After pricking, blood should begin to form on your fingertip.
  • The very first drop of blood should be wiped off with the enclosed compress.
  • Hold your arm outstretched over the dry blood card. The tip of your finger points downwards, over the square marked with red arrows on the dry blood card.
  • Keep your finger still and let about 4-5 drops of blood drip onto the card.
  • Please allow the dry blood card to dry for at least 45 minutes at room temperature on a flat and open surface away from direct sunlight, radiators and other heat sources before placing it in the envelope.