A lancet structure (606) for a lancet housing assembly (600) of a portable handheld medical diagnostic device (10) for sampling bodily fluids from a skin site of a patient, wherein the lancet structure is adapted to be located in a lancet compartment (605), the lancet structure comprising a skin penetrating end (608) and a blood transport portion (610) adjacent the skin penetrating end, wherein the skin penetrating end, when extended through an opening (636) of the lancet compartment, is shaped and sized to penetrate the patient's skin at the skin site to provide an amount of blood, the blood transport portion arranged and configured to receive the amount of blood from the skin penetrating end and to carry the amount of blood away from the skin site and to a reagent material (650) located on a floor (70, 84) of the lancet compartment and within the lancet compartment, wherein the lancet structure includes an outwardly extending spring finger (616) that extends upwardly at an upwardly extending portion (618) and longitudinally at a longitudinally extending portion (620), wherein a bend (622) connects the upwardly extending portion and longitudinally extending portion.
