vingerprik

Vingerprik, or finger-prick, is a method for obtaining a small sample of capillary blood from the fingertip by puncturing the skin with a sterile lancet. The procedure yields a tiny drop suitable for rapid tests and home monitoring, minimizing the need for venous blood draws.

Typical steps include washing hands, selecting a clean fingertip, cleansing with an alcohol swab, pricking with a sterile lancet, wiping away the first drop if contaminated with skin oils, collecting the second drop with a test strip or microcapillary tube, and applying the sample to the device or test strip. After testing, the lancet is disposed of safely in accordance with local guidelines.

Vingerprik tests are widely used for glucose monitoring in diabetes, where a blood glucose meter reads the concentration from the capillary blood. They are also used for various rapid point-of-care tests and some home screening tests when performed with validated devices. The method provides quick results and greater convenience in non-laboratory settings.

Accuracy and limitations must be considered. Capillary blood can differ from venous blood in composition, and results may be affected by sample volume, hematocrit, user technique, and device calibration. Finger-prick tests are generally suitable for screening or monitoring with validated devices, but may be less reliable for certain assays and often require confirmatory venous testing in clinical settings.

Safety and disposal are important. Risks include minor discomfort, bruising, and infection if hygiene is poor. Used lancets and test cartridges should be disposed of according to local medical-waste or sharps guidelines.