A Comprehensive to Different Types of Blood Collection Tubes

Different Types of Blood Collection Tubes

A blood collection tube is an essential tool in the medical field, making it easier to collect, process, and analyze blood samples for diagnostics and research. Healthcare professionals must understand the different types of blood collection tubes to ensure accurate and reliable test results. In this comprehensive guide, we will explore various blood collection tube types, their components, applications, and best practices for collection and handling.

What is a blood collection tube?

Sinymedical blood collection tubes are containers used to collect and store blood samples. They contain additives that help maintain the integrity of the sample and help the blood sample clot. The different types of blood collection tubes include vacuum tubes, serum tubes, and capillary tubes.

Types of Blood Collection Tubes

A patient's blood is often examined in the initial phase of disease screening. Blood collection tubes are used to collect blood from patients. However, there are many different types of blood collection tubes.

Red blood collection tube/serum tube

Serum tubes facilitate the separation of serum from whole blood in laboratory settings. These tubes contain a clot activator, typically a mixture of sodium citrate, calcium chloride, and a gel-like substance

Blood collection tubes without anticoagulants, which are also known as biochemical tubes, have an even coating of agents to prevent hanging, which is primarily used for blood biochemistry.

The labels on ordinary serum tubes and fast serum tubes will mark them with or without procoagulant, or distinguish the two differences using red and orange colors. Procoagulant accelerates blood clotting.

Volume/mlSize/mmAdditiveSeparatorMaterialCap ColorClosure
2ml13X75Clot ActivatorGelPET/GLASSGold Top TubeSafety Cap+Rubber or Rubber Stopper
3ml13X75Clot Activator
4ml13X75Clot Activator
5ml13X75Clot Activator
6ml13X100Clot Activator
7ml13X100Clot Activator
8ml16X100Clot Activator
9ml16X100Clot Activator
10ml16X100Clot Activator
If You Need a Customized Vacuum Blood Collection Tube Please Contact Us
blood collection tube in the hospital have many colors 6

Green heparin tubes

Heparin tube, an anticoagulant naturally occurring in the blood, inhibits the formation of blood clots by inhibiting thrombin and factor Xa. Heparin tubes contain heparin, a naturally occurring anticoagulant. They are commonly used for plasma collection and various chemistry tests, including electrolyte panels and renal function tests.

Volume/mlSize/mmAdditiveSeparatorMaterialCap ColorClosure
2ml13X75Lithium Heparin / Sodium HeparinGel or Not AddPET/GLASSGreen Top TubeSafety Cap+Rubber or Rubber Stopper
3ml13X75Lithium Heparin / Sodium Heparin
4ml13X75Lithium Heparin / Sodium Heparin
5ml13X75Lithium Heparin / Sodium Heparin
6ml13X100Lithium Heparin / Sodium Heparin
7ml13X100Lithium Heparin / Sodium Heparin
8ml16X100Lithium Heparin / Sodium Heparin
9ml16X100Lithium Heparin / Sodium Heparin
10ml16X100Lithium Heparin / Sodium Heparin
If You Need a Customized Vacuum Blood collection tube, Please Contact Us
Siny manufacturer green top heparin tube

Purple blood collection tube EDTA tube

EDTA (Ethylenediaminetetraacetic acid) tubes contain EDTA as an anticoagulant. EDTA chelates calcium ions, thereby inhibiting clotting factors and preventing coagulation. These tubes primarily serve hematological studies, including EDTA tube blood cell counting, hemoglobin estimation, and blood smear examination.

Volume/mlSize/mmAdditiveSeparatorMaterialCap ColorClosure
2ml13X75EDTA K2 / EDTA K3/PET/GLASSPurple Cap TubeSafety Cap+Rubber or Rubber Stopper
3ml13X75EDTA K2 / EDTA K3/
4ml13X75EDTA K2 / EDTA K3/
5ml13X75EDTA K2 / EDTA K3/
6ml13X100EDTA K2 / EDTA K3/
7ml13X100EDTA K2 / EDTA K3/
8ml16X100EDTA K2 / EDTA K3/
9ml16X100EDTA K2 / EDTA K3/
10ml16X100EDTA K2 / EDTA K3/
If You Need a Customized Vacuum Blood collection tube, Please Contact Us

Sodium citrate blood collection tube

3.2% or 3.8% sodium citrate (sodium citrate), please collect. After blood collection, invert and mix 5-8 times. The anticoagulant dilutes the blood at a ratio of 1:9.

Sodium citrate tubes contain sodium citrate, an anticoagulant that binds calcium ions and inhibits clotting factors. These tubes are essential for coagulation tests, such as prothrombin time (PT) and activated partial thromboplastin time (aPTT), which assist in the diagnosis of bleeding disorders and monitor anticoagulant therapy.

Volume/mlSize/mmAdditiveSeparatorMaterialCap ColorClosure
2ml13X753.2% Sodium CitrateGel or Not AddPET/GLASSBlue Top TubeSafety Cap+Rubber or Rubber Stopper
3ml13X753.2% Sodium Citrate
4ml13X753.2% Sodium Citrate
5ml13X753.2% Sodium Citrate
6ml13X1003.2% Sodium Citrate
7ml13X1003.2% Sodium Citrate
8ml16X1003.2% Sodium Citrate
9ml16X1003.2% Sodium Citrate
10ml16X1003.2% Sodium Citrate
If You Need a Customized Vacuum Blood collection tube, Please Contact Us

Sodium oxalate/sodium fluoride blood glucose test tube

Sodium fluoride, potassium oxalate/sodium fluoride, + sodium heparin are additives in the tube. As a weak anticoagulant, sodium fluoride prevents blood glucose degradation. Within 23 days, 4mg of the mixture of sodium fluoride + potassium oxalate/sodium fluoride + sodium heparin can prevent blood coagulation and sugar decomposition.

Volume/mlSize/mmAdditiveSeparatorMaterialCap ColorClosure
2ml13X75Sodium Fluoride + Heparin Sodium Sodium Fluoride + EDTA
Sodium Fluoride + Potassium Oxalate
/PET/GLASSGray Top TubeSafety Cap+Rubber or Rubber Stopper
If You Need a Customized Vacuum Blood collection tube, Please Contact Us
2ml Vacuum Blood Glucose Tube Sodium Fluoride Tube (2)

Clot Actirvator Coagulant Tube

The Clot Activator Coagulant Tube (CAT) actively dissolves blood clots. It inserts into the body through a small incision and emits an electrical charge, which dissolves the clot.

Volume/mlSize/mmAdditiveSeparatorMaterialCap ColorClosure
2ml13X75Clot Activator/PET/GLASSOrange Cap TubeSafety Cap+Rubber or Rubber Stopper
3ml13X75Clot Activator/
4ml13X75Clot Activator/
5ml13X75Clot Activator/
6ml13X100Clot Activator/
7ml13X100Clot Activator/
8ml16X100Clot Activator/
9ml16X100Clot Activator/
10ml16X100Clot Activator/
If You Need Customized Vacuum Blood collection tube, Please Contact Us
Medical Productions Clot Activator Tube with CE ISO

ESR Tube

ESR Tube, commonly known as erythrocyte sedimentation rate, specifically refers to the rate at which red blood cells in anticoagulated blood settle in a specific ESR Tube in a certain unit of time. I

ESR Tube is a type of blood test that measures the amount of electrolytes in the blood. Electrolytes are essential because they help to regulate the body's fluid balance, nerve and muscle function, and heart and kidney function.

Volume/mlSize/mmAdditiveSeparatorMaterialCap ColorClosure
1.6ml / 1.28ml8×1203.8% Sodium CitrateGel or Not AddPET/GLASSBlack Top TubeSafety Cap+Rubber or Rubber Stopper
2ml13X753.8% Sodium Citrate
3ml13X753.8% Sodium Citrate
4ml13X753.8% Sodium Citrate
5ml13X753.8% Sodium Citrate
6ml13X1003.8% Sodium Citrate
7ml13X1003.8% Sodium Citrate
8ml16X1003.8% Sodium Citrate
9ml16X1003.8% Sodium Citrate
10ml16X1003.8% Sodium Citrate
If You Need Customized Vacuum Blood collection tube, Please Contact Us
Siny Medical Blood Collection ESR Tube

Best Practices for Blood Collection

The integrity of blood samples and the reliability of test results depend on healthcare professionals adhering to strict protocols during blood collection. Identifying the patient, selecting the vein, and preparing the site of collection are crucial pre-collection procedures for minimizing errors and ensuring patient safety. Maintaining sample integrity and avoiding pre-analytical errors requires proper handling and storage techniques, including labeling, transportation, and temperature control.

Final Thoughts

serum tubes are an essential tool for a variety of laboratory procedures. They provide a safe, reliable, and efficient way to separate serum from other components of a sample, allowing for accurate measurement and analysis of the serum. 

Blood collection tubes are:

  • Indispensable tools in medical diagnostics.
  • Facilitating collecting.
  • Preserving.
  • Processing blood samples for laboratory testing.

Understanding the different types of blood collection tubes and their functions is crucial for healthcare professionals to ensure accurate and reliable test results. This will aid in patient diagnosis and treatment.


Why are there different types of blood collection tubes? 

Different tubes contain specific additives to suit various laboratory tests and preserve blood samples appropriately.

Can blood collection tubes affect test results? 

Improper tube selection or handling can lead to inaccurate test results, emphasizing the importance of proper tube selection and technique.

How should I store blood collection tubes? 

Store tubes according to manufacturer instructions to maintain the integrity of additives and ensure accurate test results.

What is a serum tube, and what is its purpose?

A serum tube, also known as a serum separator tube (SST), contains a gel separator that separates serum from blood cells after centrifugation. It aims to obtain serum for various laboratory tests without interfering with cellular components.

What are clot activator tubes?

Clot activator tubes contain additives that promote blood clotting, facilitating faster serum separation. Commonly, laboratories use them in chemistry tests that require serum samples for analysis.

What is sodium citrate, and why is it used in blood collection tubes?

Sodium citrate is an anticoagulant that binds calcium ions, preventing blood clotting. Blood collection tubes, such as citrate tubes, are used it for conducting coagulation studies and monitoring patients on anticoagulant therapy.

What is an EDTA tube?

An EDTA tube contains ethylenediaminetetraacetic acid (EDTA), an anticoagulant by chelating calcium ions.

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