The blood is visible through the transparent window after cannula correctly penetrate vein.

Non vacuum tubes are also available with different size and additives.

Sodium fluoride +K2EDTA, Sodium fluoride + Potassium oxalate, and Sodium fluoride + Lithium heparin are the formulas for glucose tube for blood sugar, glucose tolerance, anti-alkaline hemoglobin test and etc. Invert 8-10 times after blood collection.

Sodium citrate 3.2% or 3.8% is dispensed for coagulation test. Blood and liquid additive ratio is 9:1. This tube could not be used as first tube to collection blood. Invert 5-6 times after blood collection.

Lithium heparin or Sodium heparin is dispensed for hemorhelogy or emergency biochemistry. For sodium ion test, please use lithium heparin tube. Invert 8-10 times after blood collection.

Sodium citrate 3.8% is dispensed for sedimentation test. Blood and liquid additive volume ratio is 4:1. This tube is to match ESR Analyzer. This tube could not be used as the first tube to collect blood. Invert 8-10 times after blood collection. And the tube shall be inverted several times before experiment.

Sodium citrate 3.8% is dispensed for sedimentation test. Blood and liquid additive volume ratio is 4:1. This tube could not be used as the first tube to collect blood. Invert 5-6 times after blood collection. And the tube shall be inverted several times before experiment.

K2EDTA or K3EDTA is dispensed in the tube for blood routine tests. The rubber is qualified to match all analyzer probes. Invert 8-10 times after blood collection. And the tube shall be inverted several times before experiment.

The tube is dispensed with separating gel and clot activator. This tube is used for blood collection and storage for biochemistry, immunology, element trace, various types of virus detection and so on for clinical tests. Invert 5-6 times after blood collection, and wait for 30 minutes before centrifuge. Centrifuge shall be set as 1500-1700 RCF for 10 minutes.