Product Specification

Orsin Medical Technology ESR Blood Collection Tubes

  Orsin Medical Technology's ESR tube is a vacuum blood collection system specifically designed for the Erythrocyte Sedimentation Rate (ESR) test. It features a pre-filled, precise amount of liquid sodium citrate anticoagulant to ensure  a correct 4:1 blood-to-anticoagulant ratio, which is critical for accurate and reliable test results.

  Engineered for safety and efficiency, the tube includes a safety-engineered stopper and is made from clear, break-resistant glass or PET plastic for optimal sample visibility. It is ideal for clinical laboratories seeking consistent performance in hematology testing.

 Product Highlights: Technological Innovation Ensures Accuracy

ESR tubes incorporate advanced engineering to deliver superior clinical performance:

 To ensure the accuracy, safety, and reliability of test results, strictly adhere to the following standardized operating procedures:

1. Correct Order of Draw

•   Precaution: If multiple tubes are being collected, the non-additive tube (e.g., serum tube) should be drawn first. The citrate tube (ESR tube) should be the second in the order of draw.

• Ensures Reliability: Prevents cross-contamination from other anticoagulants (like EDTA or Heparin), which can significantly alter the test results and lead to erroneous ESR values.

2. Proper Fill Volume is Critical

•   Precaution: Allow the tube to fill completely until the vacuum is exhausted. The blood volume must reach the fill mark on the tube to achieve the exact 4:1 blood-to-anticoagulant ratio.

• Ensures Reliability: An underfilled tube has an excess of anticoagulant, which can cause hemodilution and artificially slow the sedimentation rate, producing inaccurate and unreliable results.

3. Immediate and Thorough Mixing

•   Precaution: Gently invert the tube immediately after collection a minimum of 8-10 times.

• Ensures Reliability: Ensures complete mixing of the blood with the sodium citrate anticoagulant. Inadequate mixing can lead to clot formation, which renders the sample unusable and requires a recollection.

4. Adherence to Testing Timeframe

•   Precaution: The sample should be tested within 4 hours of collection if stored at room temperature. If a delay is unavoidable, the sample may be refrigerated (2-8°C or 36-46°F) for up to 12 hours, but it must be brought back to room temperature and mixed thoroughly before testing.

• Ensures Reliability: prolonged storage at room temperature can alter the morphology and sedimentation characteristics of red blood cells, compromising the integrity of the result.

5. Use of Dedicated Equipment

•   Precaution: Use only Westergren pipettes or automated ESR analyzers that are specifically designed and validated for use with 4:1 ratio sodium citrate tubes.

• Ensures Reliability: Using incorrect or non-validated equipment (e.g., pipettes for different tube sizes or ratios) will produce invalid and non-standardized results.

6. Visual Inspection Before Use

•   Precaution: Inspect the tube for damage, cracks, or expired shelf life before use. Do not use tubes if the anticoagulant appears discolored, evaporated, or crystallized.

• Ensures Reliability: Guarantees the integrity of the vacuum and the effectiveness of the pre-filled anticoagulant, which are fundamental to obtaining a correct sample.

7. Safety Handling

•   Precaution: Treat all samples as potentially infectious. Use standard precautions. After use, dispose of the tube and sharp in an approved sharps container.

• Ensures Reliability: Protects the healthcare worker from exposure to bloodborne pathogens, ensuring a safe working environment. A safe procedure is a reliable and controlled procedure.

 Technical Specifications: Standard-Compliant Parameters

Key Features:

• Precise 4:1 blood-to-anticoagulant ratio

• Pre-filled liquid sodium citrate

• Safety-engineered design

• Clear material for easy sample inspection

• Consistent and reliable ESR results