Many blood collection tubes incorporate vacuum systems to facilitate blood flow into the tube upon insertion of the collection needle. Rubber Stoppers for Blood Collection Tube are engineered to allow controlled airflow while maintaining a vacuum seal within the tube. This design feature ensures consistent blood draw volumes and prevents hemolysis (breakdown of red blood cells), which could affect test accuracy.

Rubber stoppers for blood collection tubes come in various sizes and configurations to accommodate different tube types and medical applications. Key design considerations include:

Material Selection: Synthetic rubber compounds such as bromobutyl or chlorobutyl rubber are commonly used due to their inert properties and resistance to chemicals.

Color Coding: Stopper caps are often color-coded to indicate the type of additive or anticoagulant present in the tube, aiding healthcare professionals in selecting the appropriate collection tube for specific tests.

Compatibility Testing: Manufacturers conduct rigorous compatibility testing to ensure that rubber stoppers maintain their seal integrity and chemical resistance across a range of medical environments and conditions.