Medical Consumables and Lab Consumables OEM Manufacturer
Medical Consumables and Lab Consumables OEM Manufacturer

Coagulation Tube

Golden VacTM blue-top blood collection tubes are used for clinical coagulation tests. The Coagulation Tube is Serum Blood Collection Tube and Plasma Blood Collection Tube.

Description of Coagulation Tube


Sodium citrate is used as anticoagulant to prevent blood from clotting.


Filled with a buffered sodium citrate solution in a concentration of 0.109mol/L (3.2%).


The blood to additive ratio is 9:1. The ratio of blood to anticoagulant is critical for valid prothrombin time results. 


Immediately after draw, gently invert the tube 3-4 times in order to activate adequate anticoagulant.


Aluminum composite bags available to provide optimum protection against additive evaporation, UV light, dirt and mechanical influences.


All the necessary custom service options to fulfill your project requirements.


Centrifugation: 2000-2500g for 10-15 minutes at 18-25° C.

Specification of Coagulation Tube

Click on the item code below to view product images.

Cat. NoVolume/mlSize/mmAdditiveSeparatorMaterialCap ColorClosure
GD018SC1.813X75Sodium Citrate 3.2%/PET/GLASSCap ColorSafety Cap+Rubber
GD027SC2.713X75Sodium Citrate 3.2%/PET/GLASSSafety Cap+Rubber
GD036SC3.613X75Sodium Citrate 3.2%/PET/GLASSSafety Cap+Rubber
GD045SC4.513X75Sodium Citrate 3.2%/PET/GLASSSafety Cap+Rubber
GD018SC-F1.810.25X64Sodium Citrate 3.2%/GLASSRubber
GD027SC-F2.710.25X64Sodium Citrate 3.2%/GLASSRubber

Why Does Blood Coagulate in a Test Tube?

Blood clots in sample tubes are prevalent when the sample is not properly mixed with the clotting agent in the sample tube or when it clotted during transit. It does not point to any health issue or risk.

Please take special care to thoroughly yet gently mix the sample tube(s) after collection to assist limit the chance of clotting.

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Add: No.10 Beiyuan Ave, Huangyan, Taizhou, Zhejiang, China

Tel: +86 576 84115678



Add: 807 Palmyrita Ct, Riverside, CA 92507

Tel: + (951) -231-1480


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GD018SC 1.8ml Sodium Citrate 3.2% Coagulation Tube GD027SC 2.7ml Sodium Citrate 3.2% Coagulation Tube GD036SC 3.6ml Sodium Citrate 3.2% Coagulation Tube GD045SC 4.5ml Sodium Citrate 3.2% Coagulation Tube GD018SC-F 1.8ml Sodium Citrate 3.2% Coagulation Tube GD027SC-F 2.7ml Sodium Citrate 3.2% Coagulation Tube
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