Liquid Sodium Citrate (3.2%) Safety-engineered, latex-free stopper ESR 1.28ML
Orsin Medical Technology ESR Blood Collection Tubes
Engineered for precision in hematological testing, the Orsin ESR Tube ensures accurate Erythrocyte Sedimentation Rate results. It comes pre-filled with the exact volume of liquid sodium citrate anticoagulant to guarantee the critical 4:1 blood-to-anticoagulant ratio, which is essential for test reliability.
Crafted with clinician safety and workflow in mind, the tube features a robust safety cap and is manufactured from high-clarity material for easy sample evaluation. Orsin's ESR Tube is the trusted choice for laboratories dedicated to delivering consistent and accurate patient diagnostics.
Product Highlights: Technological Innovation Ensures Accuracy
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 |
Usage Precautions: Standardized Operations Ensure Reliability
3.1 Pre-collection Preparation
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Tube Selection: Verify black-capped ESR-specific tubes contain 3.8% sodium citrate. Inspect for particulates, sedimentation, or cap looseness.
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Storage Conditions: Store at 4-25°C. Avoid freezing (causes tube fracture) or high temperatures (degrades anticoagulant).
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Patient Preparation: Collect blood from calm, preferably fasting patients. Note non-fasting status on requisition forms.
3.2 Blood Collection Protocol
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Order of Draw: Follow international sequence: blood culture → coagulation tubes → other anticoagulant tubes → ESR tubes (black cap). Prevents anticoagulant cross-contamination.
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Exact Fill Volume: Draw precisely to fill line (typically 2mL). Underfilling causes false-low ESR; overfilling promotes microclot formation.
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Mixing Technique: Gently invert 5-10 times immediately after collection. Avoid vigorous shaking to prevent partial anticoagulation or hemolysis.
3.3 Post-collection Handling
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Testing Timeline: Analyze within 2 hours. Delayed testing alters erythrocyte morphology. Store at 18-25°C if necessary (NEVER refrigerate).
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Tube Orientation: Transport upright to avoid disturbing sedimentation.
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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.*
Technical Specifications: Standard-Compliant Parameters
| Parameter | Specification |
|---|---|
| Intended Use | Venous blood collection for Erythrocyte Sedimentation Rate (ESR) testing by the Westergren method. |
| Anticoagulant | Liquid Sodium Citrate (3.2% or 3.8%) |
| Fill Volume | 1.28mL |
| Blood-to-Anticoagulant Ratio | 4:1 |
| Tube Material | Clear, break-resistant PET (Polyethylene Terephthalate) or Glass |
| Closure Material | Safety-engineered rubber stopper with soft hemopause tube shield. |
| Sterility | Sterilized by Gamma Irradiation. Pyrogen-free. |
| Shelf Life | 24 months from the date of manufacture. |
| Storage Conditions | Store at room temperature (15-30°C / 59-86°F). Protect from direct sunlight. |
| Ordering Information | Catalog Number: [e.g., ESR-32-200CT] Unit of Sale: Box of 200 tubes |
Key Features:
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Precise 4:1 blood-to-anticoagulant ratio
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Pre-filled liquid sodium citrate
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Safety-engineered design
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Clear material for easy sample inspection
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Consistent and reliable ESR results
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