DefinitionA capillary sample is a blood sample collected by pricking the skin. Capillaries are tiny blood vessels near the surface of the skin.Alternative NamesBlood sample - capillary; Fingerstick; HeelstickHow the test is performedSome blood tests are performed on blood obtained by pricking the skin of the finger, heel, or other areas and collecting a drop (or a few drops) of blood on a test strip or into a small container.The area is cleansed with antiseptic and pricked with a sharp needle or a lancet. The blood may be collected in a pipette (small glass tube), on a slide, onto a test strip, or into a small container. Cotton or a bandage may be applied to the puncture site if there is any continued bleeding.How the test will feelSome people feel moderate pain, while others feel only a p