3.8% Sodium Citrate ESR Tubes with Black Stopper: Dedicated Collection for Westergren & Automated Methods
Customized Medical Vacuum Blood Collection Tube
Vacuum Blood Collection
One Tube, One Test, One Standard: Dedicated to Accurate ESR
The Erythrocyte Sedimentation Rate (ESR) is one of the oldest and most enduring laboratory tests—a simple, non‑specific marker of inflammation that remains invaluable in diagnosing and monitoring conditions ranging from autoimmune disorders to infections and malignancies. Its apparent simplicity, however, belies a critical requirement: absolute standardization at the point of collection. Any deviation in the blood‑to‑anticoagulant ratio or tube dimensions directly alters the sedimentation rate, potentially misleading clinicians.
Our Black Top ESR Vacuum Tubes are engineered for this single, essential purpose. Pre‑filled with exactly 3.8% (0.129M) tri‑sodium citrate and calibrated to draw the precise blood volume required for a 4:1 ratio (4 parts blood : 1 part citrate) , these tubes eliminate the most common pre‑analytical errors in ESR testing. The standardized black stopper provides immediate visual identification, distinguishing them from coagulation (light blue) and other citrate tubes.
| Product Name | Cap Color | Additive | Material | Volume | Tube Size |
| Plain Tube | Red | No additive | Glass/PET | 1-10ml | 13*75mm 13*100mm 16*100mm |
| Pro Coagulation Tube | Red | Coagulant | Glass/PET | 1-10ml | 13*75mm 13*100mm 16*100mm |
| SST Tube | Yellow | Gel & Clot Activator | Glass/PET | 1-10ml | 13*75mm 13*100mm 16*100mm |
| Heparin Tube | Green | Lithium Heparin Heparin Sodium | Glass/PET | 1-10ml | 13*75mm 13*100mm 16*100mm |
| PT Tube | Blue | 3.2%Sodium Citrate | Glass/PET | 1-10ml | 13*75mm 13*100mm 16*100mm |
| Glucose Tube | Grey | Sodium Fluoride/EDTA | Glass/PET | 1-10ml | 13*75mm 13*100mm 16*100mm |
| EDTA Tube | Purple | EDTA K2 K3 | Glass/PET | 1-10ml | 13*75mm 13*100mm 16*100mm |
| ESR Tube | Black | 3.8%Sodium Citrate | Glass/PET | 1-10ml | 13*75mm 9*120mm |
Q1:Do you charge for the samples ?
A1:Samples are free, but you need to bear the shipping cost by yourself.
Q2: Can I visit your factory?
A2: Sure. We will make the appointment and the most reasonable planning for your transportation.
Q3:How long is your production lead time?
A3:It depends on product and order qty.
Q4:When can I get the quotation?
A4:We usually quote you within 24 hours after we get your inquiry.If you are very urgent to get the quotation.Please call us or tell us in your mail, so that we could regard your inquiry priority.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.