GEL Clot Yellow Top Vacutainer High Throughput Testing Clot Activator Gel

Serum separator tubes with clot activator (commonly known as "yellow-top tubes") are vacuum blood collection tubes designed for rapid serum preparation. Pre-filled with inert separator gel and high-activity clot activator, these tubes accelerate clotting post-collection. During centrifugation, the gel forms a stable barrier to completely separate serum from blood cells, ensuring sample purity and stability.

• Biochemical Testing: Liver/kidney function, lipids, glucose, and other routine biochemistry
• Immunoassays: Hormones, tumor markers, infectious disease antibodies (e.g., HBV, HIV)
• Therapeutic Drug Monitoring: Blood drug concentration analysis (e.g., cyclosporine, valproic acid)
• Blood Bank Applications: Serum preparation for cross-matching
• Automated Platforms: Compatible with high-throughput laboratory automation systems

• Collection Protocol:
  • Gently invert tube 5-8 times immediately after draw to mix clot activator with blood
  • Avoid vigorous shaking to prevent hemolysis or gel barrier damage
• Centrifugation:
  • Centrifuge after complete clotting (1500-2000 ×g, 10-15 min) at 18-25°C
  • Low-temperature centrifugation may impair gel solidification
• Sample Handling:
  • Transfer serum within 2 hours post-centrifugation to avoid prolonged gel contact
  • For insufficient serum (e.g., lipemic samples), perform secondary centrifugation without disrupting the gel barrier