7ml 8ml Sodium Citrate ESR Tube With Screw Cap Green Top Lithium Heparin Tube

ESR (Erythrocyte Sedimentation Rate) blood collection tubes are critical tools in clinical laboratories for screening and monitoring inflammatory and infectious diseases. Their core function is to standardize the collection of anticoagulated venous blood samples to ensure accurate measurement of erythrocyte sedimentation velocity.

In clinical diagnostics, ESR testing provides multifaceted value:

• Inflammatory disease monitoring: Serves as a sensitive indicator for inflammation caused by rheumatic immune disorders (e.g., rheumatoid arthritis), tuberculosis, and tissue damage.
• Diagnostic support: Functions as a non-specific auxiliary marker for infectious diseases (e.g., pneumonia, endocarditis), hematological disorders, and malignancies.
• Treatment evaluation: Dynamic ESR tracking assesses the efficacy of anti-inflammatory therapies, anti-infective treatments, or chemotherapy.

ESR tubes overcome limitations of traditional ESR testing through multiple technological innovations, delivering safer and more reliable sample collection for modern laboratories.

• Vacuum-sealed system: Precisely calibrated negative pressure enables automatic blood volume aspiration
• Specialized anticoagulant formulation: Sodium citrate chelates calcium ions to block coagulation cascades
• Optical compatibility: Tubes are manufactured from high-transparency glass/polymer with standardized diameter

• Fill to marked fill line - deviations >±5% cause anticoagulant imbalance
• Keep patient's arm downward and tube port upward to prevent blood reflux

• Gently invert 5-10 times (180° rotation) immediately post-collection
• Avoid vigorous shaking to prevent platelet activation or hemolysis

• Complete testing within 2 hours of collection
• Store vertically at 15-25°C if delay is unavoidable

Follow international contamination sensitivity sequence: Blood culture bottles → Coagulation tubes → ESR tubes → Heparin tubes → EDTA tubes → Glycolytic inhibitor tubes.

• Store unused tubes at 4-25°C protected from light
• Inspect anticoagulant for uniformity - discard if precipitate appears

• Material: High-purity glass or PET polymer (>90% light transmittance)
• Stopper: Internationally standardized black

• Anticoagulant: Sodium citrate
• Format: Liquid pre-fill, 0.32ml or 0.4ml
• Total volume: 1.28ml (with 0.32ml anticoagulant) or 1.6ml (with 0.4ml anticoagulant)

• Anticoagulant ratio: 1:4 (anticoagulant:blood)
• Shelf life: 18 months at ambient temperature
• Centrifugation tolerance: ≥3000×g

• Automated ESR analyzers: Tianhai ESR-2040, Succeeder SD-1000, Biobase BK-ESR20
• Traditional Westergren racks: ICSH-compliant
• LIS/HIS integration: Barcode scanning support