Erythrocyte Sedimentation Tubes work by binding calcium ions, thereby preventing blood clotting. These tubes are available in different volumes and can be tailored for manual or automated measurement systems. One of the primary types is the buffered sodium citrate tube, in which the ratio of blood to citrate is precisely adjusted to 4:1.
Like all other blood collection products by TTT World, these tubes are vacuum-sealed, single-use, and can be manufactured with pre-barcoded labels upon request.
Sample Collection Using Sedimentation Tubes
After venous blood is collected, it must be mixed thoroughly. When held in a vertical position, erythrocytes gradually settle toward the bottom. The distance they travel from the top over a specific period indicates the Erythrocyte Sedimentation Rate (ESR).
The sedimentation process typically follows these phases:
First 10 minutes: minimal settling, formation of rouleaux
Next 40 minutes: constant settling rate
Final 10 minutes: reduced velocity, erythrocytes accumulate at the bottom
The collected blood should not be stored for long before testing, and measurements must be conducted in controlled laboratory conditions, away from heat or environmental interference.
Standard Conditions for Blood Collection
To ensure accurate test results, the following standard pre-test conditions are recommended:
Blood draws are typically performed between 08:00 and 11:00 AM
Avoid strenuous physical activity for at least 3 days prior
Abstain from alcohol consumption for at least 24 hours prior
Fast for 10–12 hours before the test
Avoid food and drink (except water) after 10:00 PM the night before
Maintain a consistent posture (e.g., seated) during blood collection to ensure comparable results
Take deep breaths and relax 10 minutes before the draw
Post-Collection Guidelines
Avoid prolonged or excessive use of a tourniquet
Do not shake sedimentation tubes after collection
Avoid rapid aspiration when transferring blood between containers
Do not apply heat or cold to the sample
Do not interrupt centrifugation once started
Allow sufficient time for serum separation (maximum wait time: 2 hours)
Ensure the puncture site is dry and avoid hematoma areas
Failure to follow these steps may lead to inaccurate results or increased hemolysis.
TTT World: Your Health in Trusted Hands
At TTT World, our commitment goes beyond blood tubes. We ensure your safety with every medical product we manufacture. Health is vital to all of us, and we strive to support it with certified quality and innovative solutions.
Our dedicated production facilities are equipped with the latest technologies to produce sterile, high-performance tubes. The success of our products is recognized not only in Turkey but also on the global stage. Our tubes are exported to numerous countries and used in healthcare facilities worldwide.
You can confidently obtain any type of blood tube or medical product you need directly from us. In response to public health demands such as COVID-19, we also supply PCR tests to institutions in need.
At TTT World, we proudly represent Turkey’s medical excellence and maintain the highest standards in all our operations. Our products are manufactured with rigorous precision, fully approved by the Turkish Standards Institution, and trusted by organizations around the world. When you choose TTT World, you choose the right partner in health.
