The large blood segment piercer you described is designed to be used with test tubes ranging from 10-12mm in diameter. However, it can also be inserted into larger tubes with diameters of 13-17mm. One of the notable features of this segment piercer is its large 18-gauge diameter needle. This size is chosen to prevent hemolysis, which is the rupturing of red blood cells and subsequent release of their contents. By using a needle with a larger diameter, the risk of hemolysis is reduced, ensuring accurate test results.

Each case of these blood segment piercers contains 5000 units, making it a convenient and cost-effective solution for medical facilities and laboratories. The abundance of these piercers allows for efficient and continuous sample collection and processing, ultimately benefiting both labs and research facilities’.