blood spot cards

Blood spot cards are special pieces of filter paper used to collect small amounts of blood, typically obtained by pricking the finger or heel. Once the blood is applied, it dries and is sealed for laboratory testing. These cards are commonly used for newborn screening to detect certain health conditions early, such as metabolic or genetic disorders. They provide an efficient, minimally invasive way to preserve blood samples for analysis, allowing health professionals to diagnose and monitor conditions with a small blood volume before symptoms appear.