Capillary blood collection tube IVD, electrolyte-balanced heparin

Capillary blood collection tubes with electrolyte-balanced heparin are single-use devices designed for drawing small blood samples from capillaries (e.g., fingertips or heels). They preserve blood integrity during transport and storage, enabling tests like microhematocrit, neonatal bilirubin screening, or plasma chemistry analysis without clotting.

These tubes are typically non-sterile and sealed with a protective putty after use. Regulation varies by jurisdiction, but they are generally classified based on their intended diagnostic purpose and risk level. Availability depends on local healthcare needs and laboratory workflows.