Yellow Blood Collection Tubes – Clot Activator + Gel / 3.5 ml – Vacuum

Yellow Blood Collection Tubes are vacuum-assisted specimen collection tubes containing a clot activator and separation gel for efficient serum preparation. The clot activator promotes rapid clot formation, while the gel forms a stable barrier between serum and blood cells after centrifugation, helping preserve sample integrity. Designed with a 3.5 mL capacity, these tubes provide reliable performance and consistent results for research, diagnostic, educational, and quality-control laboratory applications.