Collecting technique and device to concentrate a blood sample on a test pad

A lancet structure for making an incision at a skin site and transporting an amount of blood from the incision away from the skin site, the lancet structure comprising an elongated body having a first surface and a second surface, a skin penetrating end for making the incision, a through bore extending from the first surface at an area of ingress of the through bore to the second surface at an area of egress of the through bore, a blood transport portion extending from the skin penetrating end to the through bore along the first surface, and a spreading area adjacent the through bore for increasing the surface area of the blood fluid transported to the second surface via the through bore, the spreading area being provided only in the second surface and in communication with the through bore, the blood transport portion being configured to transport the amount of blood away from the skin site via a capillary force to the through bore, and the through bore being configured to transport the blood to the second surface spreading area, the spreading area extending outwardly beyond the area of egress of the through bore for increasing the surface area of the blood fluid beyond the area of egress of the through bore, the through bore intersecting the second surface at a location partially outside the spreading area.