The Lewer syringe is an essential tool in medicine. It is used for administering injections, drawing blood and other procedures. This device is round in shape with thin walls and a long needle, which ensure ease of use and patient safety. Lewer syringes come in a variety of sizes and can be either disposable or reusable. Disposable syringes are used for rapid tests, analyzes and other procedures that require a small volume of liquid. Reusable syringes can be used for a wide range of procedures and have a larger injection volume. One of the main advantages of Lewer syringes is simplicity and ease of use. They feature a durable, lightweight length that won't break when used, and they also have a rubber head to ensure a tight seal. As a result, it makes blood collection, medication administration and injections painless. In addition, Lewer syringes are characterized by high dosage accuracy, which ensures effective distribution of the drug. It is important to note that the correct choice of syringe is one of the key factors in the success of the procedure. It is important that the syringe is suitable for the type of blood sampling, the size of the needle and the volume of the substance that needs to be injected. For example, special syringes are used to draw blood from infants and young children, which limit the diameter of the catheter and ensure comfort for the child. However, despite all the benefits, there are some risks associated with the use of syringes. First, improper sampling technique can result in skin puncture or needle breakage, which can cause bleeding or infection. Secondly, using unsterile syringes can lead to infection. To reduce the risks of using syringes, good hygiene must be observed. It is necessary to properly sterilize and store syringes between procedures, ensuring they are disinfected and protected from bacteria. It is also necessary to ensure that the syringes used are suitable for the required procedure and match the patient's skin type. Despite some risks of using Lewer syringes, they are a necessary tool in medical practice. They allow you to quickly, accurately and painlessly carry out the necessary procedures, thanks to the convenience and accuracy of dosage. However, proper collection technique and storage of syringes requires attention and hygiene, which helps reduce the risk of infection.