Shanghai Orsin Medical Technology Co., Ltd.
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Orsin Medical Technology presents its high-precision Erythrocyte Sedimentation Rate (ESR) Blood Collection Tubes, engineered for accuracy and reliability in clinical diagnostics.
These vacuum-evacuated tubes are specifically designed for the precise measurement of the Erythrocyte Sedimentation Rate, a critical marker for detecting and monitoring inflammatory activity, infections, and chronic diseases.
ESR tubes incorporate advanced engineering to deliver superior clinical performance:
| Feature Category | Technical Specification | Clinical Value |
|---|---|---|
| Contamination Prevention | Closed vacuum system; direct blood transfer to anticoagulant tube | Eliminates operator exposure; reduces lab contamination; complies with biosafety standards |
| Operational Efficiency | Distinctive black cap; pre-measured anticoagulant; ready-to-use | Streamlines workflow; reduces sampling errors |
| Result Precision | 0.129mol/ L(anticoagulant:blood=1:4); concentration-controlled | Ensures consistent anticoagulation; prevents ESR deviations |
| System Compatibility | Compatible with major automated ESR analyzers (e.g., ESR-30/40); LIS/HIS integration | Enhances lab efficiency; reduces transcription errors |
| Interference Resistance | Specialized anticoagulant minimizes effects of icteric/hemolyzed/lipemic samples | Expands detectable sample range; improves reliability in pathological states |
Tube Selection: Verify black-capped ESR-specific tubes contain 3.8% sodium citrate. Inspect for particulates, sedimentation, or cap looseness.
Storage Conditions: Store at 4-25°C. Avoid freezing (causes tube fracture) or high temperatures (degrades anticoagulant).
Patient Preparation: Collect blood from calm, preferably fasting patients. Note non-fasting status on requisition forms.
Order of Draw: Follow international sequence: blood culture → coagulation tubes → other anticoagulant tubes → ESR tubes (black cap). Prevents anticoagulant cross-contamination.
Exact Fill Volume: Draw precisely to fill line (typically 2mL). Underfilling causes false-low ESR; overfilling promotes microclot formation.
Mixing Technique: Gently invert 5-10 times immediately after collection. Avoid vigorous shaking to prevent partial anticoagulation or hemolysis.
Testing Timeline: Analyze within 2 hours. Delayed testing alters erythrocyte morphology. Store at 18-25°C if necessary (NEVER refrigerate).
Tube Orientation: Transport upright to avoid disturbing sedimentation.
Sample Rejection Criteria: Reject clotted, severely hemolyzed, improperly filled (>±10%), unlabeled, or damaged specimens.
*Note: 30% of ESR errors originate from pre-analytical issues, primarily inaccurate fill volumes and improper mixing.*
| arameter Category | Specification Detail |
|---|---|
| Intended Use | For the collection of venous blood and the measurement of Erythrocyte Sedimentation Rate (ESR). |
| Anticoagulant | Tri-Sodium Citrate (Na<sub>3</sub>C<sub>6</sub>H<sub>5</sub>O<sub>7</sub> · 2H<sub>2</sub>O) |
| Concentration | 3.2% (0.109 Molar) or 3.8% (Note: 3.2% is the ICSH international standard) |
| Blood to Additive Ratio | 4:1 (e.g., 1.6 mL draw volume with 0.4 mL citrate) |
| Tube Size | Common sizes: 13x75 mm, 16x100 mm |
| Draw Volume | Common volumes: 1.8 mL, 2.4 mL, 2.7 mL, 4.5 mL |
| Tube Material | Clear PET (Polyethylene Terephthalate) or Glass |
| Closure Color | Black (ISO 6710 & CLSI Standard) |
| Sterility | Sterilized by Radiation (SAL 10<sup>-6</sup>) |
| Endotoxin Level | ≤ 0.5 EU/mL (As per USP/EP standards) |
| Shelf Life | Typically 12-24 months from date of manufacture. |
Optimized Anticoagulant: Pre-filled with a 3.2% concentration of Tri-Sodium Citrate, ensuring the ideal blood-to-anticoagulant ratio for consistent and clinically accurate ESR results.
International Compliance: Features a distinct black closure for instant, unambiguous identification according to global ISO 6710 standards, enhancing safety and workflow efficiency in the lab.
Superior Clarity: Manufactured from high-quality, clear glass or PET plastic for excellent sample visibility and minimal interference.
Safety and Reliability: Each batch undergoes rigorous quality control to ensure sterility, consistent vacuum pressure, and clot-free sample collection.