The Types segment classifies Sodium Citrate Coagulation Test Tubes by material, anticoagulant concentration, volume, and system design. Material differentiation—primarily between medical‑grade polypropylene plastic and borosilicate glass—affects cost, breakage risk, and compatibility with automated analyzers; plastic dominates due to lower breakage rates and lighter weight. Anticoagulant concentration is standardized at 3.2% or 3.8% sodium citrate, with the former preferred for routine coagulation assays and the latter for specialized tests requiring higher buffering capacity. Volume options typically range from 2 mL to 5 mL, influencing sample throughput and storage logistics; larger volumes are favored in high‑volume laboratories, while smaller volumes support pediatric and limited‑sample scenarios. Finally, closed‑system tubes, featuring integrated seals, are essential for contamination control, whereas open‑system tubes remain in limited use for manual processing. Each type’s market contribution aligns with laboratory workflow preferences, regulatory compliance, and cost considerations, shaping the overall market taxonomy.