Adult & paediatric sampling essentials

Finger sampling puncture depth

Selecting device puncture depth for finger puncture

  • 2.2mm is the maximum puncture depth that should typically be used for finger puncture in adults and children over eight years old1
  • Depths of up to 2.2mm should be used in proportion to body size and weight
  • Recommended maximum puncture depth for children between six months* and eight years old is 1.5mm1
  • Babies under six months old, weighing less than 10kg, or not yet walking should be punctured on the heel1
2.2mm is the maximum puncture depth that should typically be used for finger puncture in adults and children over eight years old. Recommended maximum puncture depth for children between six months and eight years old is 1.5mm.

Expert Tip

The finger is the preferred site for adults and children over six months old1*

These materials have been produced in consultation with key opinion leaders and follow global guidelines, but the user should use his or her professional judgement when using any technique or method described in these materials and should take into account all applicable national, regional and institutional guidelines and regulations.

1. WHO guidelines on drawing blood: best practices in phlebotomy. World Health Organisation; 2010. * Weighing more than 10kg1
Generally, shorter lancets for patients with lower body weight than average, and longer lancets for patients with above-average weight for age.