Abstract: A sampler device for extraction, collection and delivery of a blood sample, includes a lancet (50) carried by a piston (40) which is movable in a cylinder (30), a mechanism (60,70) arranged to drive the piston for expelling of the lancet out from the cylinder in the distal direction and subsequently for retraction of the piston and lancet in a proximal direction, opposite to the distal direction, the cylinder being arranged for collection of the blood sample and the piston being controllable by the mechanism to travel in the distal direction upon feeding a sample volume out from the cylinder.