| Product Name | EDTA Tubes |
| Tube Material | PET/Glass |
| OEM/ODM | Yes |
| Certificate | CE, ISO13485, ISO9001 |
| Usage | Blood Collection |
| Sterile | Irradiation Sterilization |
| Sample | Free |
| Service | The groups we serve: are distributors, import traders, government procurement, Buying Agents, and medical chain stores. We provide one-stop procurement for you to simplify your procurement process |
The Siny Factory EDTA-K2 Blood Collection Tube is a sterile, single-use vacuum tube designed for accurate whole blood collection in clinical and laboratory environments. It contains a precisely dosed EDTA-K2 anticoagulant, which prevents blood coagulation by binding calcium ions while preserving cellular morphology.
Manufactured under controlled production conditions, this tube is intended for routine hematology testing where sample integrity and repeatability are critical. Its stable vacuum performance, uniform additive distribution, and medical-grade materials make it suitable for hospitals, diagnostic laboratories, and research institutions seeking consistent pre-analytical results.
EDTA-K2 (dipotassium ethylenediaminetetraacetate) is one of the most widely used anticoagulants in hematology. It effectively inhibits the coagulation cascade by chelating free calcium ions in the blood, ensuring that the sample remains fluid after collection.
Compared with other anticoagulants, EDTA-K2 is preferred for blood cell analysis because it helps maintain the natural size, shape, and distribution of red blood cells, white blood cells, and platelets. This makes EDTA-K2 tubes a standard choice for complete blood counts and related tests that rely on accurate cellular evaluation.
| Volume/ml | Size/mm | Additive | Separator | Material | Cap Color | Closure |
| 2ml | 13X75 | EDTA K2 / EDTA K3 | / | PET/GLASS | Purple Cap Tube | Safety Cap+Rubber or Rubber Stopper |
| 3ml | 13X75 | EDTA K2 / EDTA K3 | / | |||
| 4ml | 13X75 | EDTA K2 / EDTA K3 | / | |||
| 5ml | 13X75 | EDTA K2 / EDTA K3 | / | |||
| 6ml | 13X100 | EDTA K2 / EDTA K3 | / | |||
| 7ml | 13X100 | EDTA K2 / EDTA K3 | / | |||
| 8ml | 16X100 | EDTA K2 / EDTA K3 | / | |||
| 9ml | 16X100 | EDTA K2 / EDTA K3 | / | |||
| 10ml | 16X100 | EDTA K2 / EDTA K3 | / | |||
| If You Need a Customized customized Blood collection tube, Please Contact Us | ||||||


Each tube contains a carefully controlled amount of EDTA-K2, applied through a uniform coating process. This ensures immediate anticoagulation and maintains a consistent blood-to-additive ratio, which is essential for reliable laboratory results.
The tube is manufactured with a calibrated vacuum system that draws the intended blood volume accurately. Consistent fill volume reduces the risk of dilution errors and supports compatibility with automated hematology analyzers.
The tube body is produced using high-transparency medical-grade PET, offering good mechanical strength and clear visibility of the specimen. The stopper is designed to provide a secure seal, minimizing leakage and contamination risks during handling and transport.
A purple cap is used in accordance with international color-coding conventions for EDTA tubes, enabling quick identification during sample collection and laboratory processing.
The Siny Factory EDTA-K2 Blood Collection Tube is suitable for a wide range of diagnostic and research uses, including:
Complete Blood Count (CBC)
Hematocrit and hemoglobin analysis
Platelet count and morphology evaluation
White blood cell differential testing
Blood typing and immunohematology procedures
Whole blood sample preparation for molecular or cellular studies
These applications require stable anticoagulation and preserved cellular structure, which EDTA-K2 is specifically designed to support.
Verify that the tube packaging is intact and within its shelf life.
Perform venipuncture using standard blood collection techniques and compatible vacuum systems.
Allow the tube to fill automatically to its nominal volume.
Gently invert the tube 8–10 times immediately after collection to ensure complete mixing of blood and EDTA-K2.
Transport and store the sample according to laboratory guidelines prior to analysis.
Proper handling helps maintain sample quality and reduces the risk of pre-analytical errors.
If you are sourcing Siny Factory EDTA-K2 Blood Collection Tubes for hospital use, laboratory distribution, or OEM projects, we welcome your inquiry.
Please contact us to discuss technical specifications, samples, customization options, and pricing. Our team is ready to support your blood collection needs with a stable supply and professional service.
EDTA tube is a type of blood collection tube that contains ethylenediaminetetraacetic acid (EDTA) as an anticoagulant. EDTA works by binding to calcium ions in the blood, which prevents clotting and helps preserve the sample for laboratory analysis.
The primary purpose of using EDTA tubes is to collect blood samples for various laboratory tests, particularly those related to blood cell counts and blood typing. EDTA helps maintain the integrity of the blood sample by preventing coagulation and ensuring reliable test results.
EDTA works by chelating calcium ions in the blood, which are essential for the coagulation process. By binding these ions, EDTA prevents clot formation.
Sinymedical offers K2 and K3 EDTA tubes, which differ in the number of potassium ions they contain, catering to various laboratory needs.
K2 EDTA tubes contain dipotassium EDTA, while K3 EDTA tubes contain tripotassium EDTA, differing in concentration and specific applications.
Both types effectively prevent clotting, but the choice between them may depend on specific laboratory protocols and test requirements.
Yes, K2 EDTA tubes are suitable for most hematological tests, including complete blood counts (CBC) and blood typing.
K3 EDTA tubes are often used in specialized applications where a higher concentration of potassium is needed, such as certain molecular assays.
Store EDTA tubes at room temperature (4-25°C) and avoid exposure to extreme temperatures or direct sunlight to maintain their effectiveness. It is important to check the expiration date on the tubes and avoid using expired products
EDTA tubes can be purchased from various medical supply companies, laboratory equipment suppliers, and online retailers for high-quality EDTA tubes.
You can visit our website at [https://www.edtatube.com/]https://www.sinymedical.com/edta-tube/).
No, EDTA tubes are designed for single use only to ensure safety and prevent contamination.
Yes, our EDTA tubes meet international quality standards and undergo rigorous testing to ensure reliability and safety.
Our EDTA tubes are made from high-quality polyethylene or glass materials that ensure durability and clarity for accurate readings.
Our capacity can be 500,000PCS per day.
Yes, we offer customization options for branding and labeling based on your specific requirements.
Yes, Sinymedical has a dedicated customer support team. You can reach them through the contact information provided on their website.
Yes, Sinymedical offers international shipping to many countries. Please check our shipping policy for more details or contact customer support for specific inquiries.
