Slender ESR Blood Collection Tube
The Slender ESR Blood Collection Tube is a specialized vacuum blood collection tube designed for the accurate determination of Erythrocyte Sedimentation Rate (ESR) using the Westergren method and various automated ESR analyzers. This black cap blood collection tube contains a precisely measured 3.8% sodium citrate anticoagulant solution, ensuring the correct anticoagulant-to-blood ratio of 1:4, which is essential for reliable ESR testing and inflammatory disease monitoring.
Manufactured from high-quality medical-grade glass, the slender ESR tube provides excellent sample stability, minimizes hemolysis, and delivers consistent laboratory results. The tube is widely used in hospitals, diagnostic laboratories, clinical laboratories, blood collection centers, and healthcare facilities for the detection and monitoring of infections, autoimmune disorders, inflammatory diseases, rheumatic conditions, and chronic illnesses.
The narrow, elongated tube design is compatible with most automated erythrocyte sedimentation rate analyzers, making it ideal for high-throughput laboratory environments. The vacuum system ensures accurate blood draw volume while maintaining specimen integrity and reducing contamination risk




Available Sizes:
8 × 120 mm
Specifications:
Material: Glass
Certification:
CE and ISO 13485
Major Features:
Black top ESR blood collection tube
Contains 3.8% Sodium Citrate anticoagulant
Anticoagulant-to-blood ratio: 1:4
Designed for ESR (Erythrocyte Sedimentation Rate) testing
Suitable for Westergren ESR method
Compatible with automated ESR analyzers
Sterile vacuum blood collection system
Excellent sample preservation and anticoagulation performance
Available in multiple draw volumes such as 1.28mL, 1.6mL
CE and ISO certified manufacturing standards
Safe, reliable, and easy-to-use blood specimen collection solution
Why you should buy from us?
Professional Medical Manufacturing Factory
We are a direct manufacturer specializing in high-quality medical consumables. By purchasing directly from our factory, you benefit from competitive pricing while maintaining premium product quality.
With over 800 employees and more than 80 production lines, we have strong mass production capabilities to ensure fast delivery and stable supply for global customers.
Our production facility includes a 25,000+ m² purification workshop, ensuring excellent sterility, safety, and product reliability.
Certified Quality Assurance
Our products are manufactured under strict quality control standards and are certified with CE and ISO certifications.
This guarantees product quality, compliance, and complete export documentation, helping simplify your import and registration process in your local market.

Rich Export Experience
We have successfully exported medical products to more than 40 countries worldwide.
With extensive international trade experience, we understand the requirements of different markets and can provide professional export support, stable logistics solutions, and efficient customer service.
One-Stop Medical Supply Solution
In addition to blood collection tubes, we also offer a wide range of medical consumables, including:
Blood Collection Needles
Infusion Sets
Vacutainer Systems
Medical Laboratory Supplies
Other Disposable Medical Products
We are committed to providing reliable products and long-term partnership solutions for distributors, hospitals, laboratories, and medical wholesalers worldwide.
Send us your inquiry for pricing, product specifications, OEM services, or samples
Our professional sales team is ready to provide fast responses, reliable support, and customized solutions for your medical supply business.
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