The ornamental design for a lancet, as shown and described.
FIG. 1 is a top plan view of a lancet, showing our new design;
FIG. 2 is a left side view of the lancet of FIG. 1, wherein the right side view of the lancet would appear as a mirror image of FIG. 2;
FIG. 3 is a bottom plan view of the lancet of FIG. 1;
FIG. 4 is a front view of the lancet of FIG. 1;
FIG. 5 is a rear view of the lancet of FIG. 1;
FIG. 6 is a rear, top and right side perspective view of the lancet of FIG. 1, wherein a rear, top and left side perspective view of the lancet would appear as a mirror image of FIG. 6; and,
FIG. 7 is a front, bottom and right side perspective view of the lancet of FIG. 1 with a cap of the lancet being disconnected from a body of the lancet, wherein a front, bottom, left side perspective view of the lancet with the cap being disconnected from the body would appear as a mirror image of FIG. 7.
The broken lines represent unclaimed portions of the article and forms no part of the claimed design.