Diabetic Lancets are small medical tools used for capillary blood sampling during sugar testing. They are designed for painless testing and are similar to scalpels but with a double-edged blade or needle. Lancets are used to make punctures to obtain small blood specimens and are also used for skin testing for allergies. Blood-sampling devices, also known as lancing devices, are commonly used by diabetics for blood glucose monitoring. The depth of skin penetration can be adjusted for different skin thicknesses. Long lancing devices are used for fetal scalp blood testing to measure the acid base status of the fetus.