The lancets are quite easy to use. You just push it firmly onto your finger tip and it pops out and it's all done.
Make you jump just a little bit. I had to use both my lancets as the first try didn't produce a big enough drop.

If anyone is interested to know how these tests are done the instructions are online here. Instructions for Blood Spot Collection the spring loaded lancet thingies are the little blue boxes that are shown sitting on the blood spot card.