Commonly used blood collection tubes are as follows:

• Biochemical

Additive-free tube (Red cap): mainly used for serum biochemistry (liver function, kidney function, myocardial enzymes, amylase, etc.), electrolytes (serum potassium, sodium, chlorine, calcium, phosphorus, etc.), thyroid function, drug testing, AIDS Detection, tumor markers, serum immunology.

The coagulation tube (orange cap) is generally used for emergency biochemistry.

Gel tube (yellow cap) is mainly used for serum biochemistry (liver function, kidney function, myocardial enzyme, amylase, etc.), electrolyte (serum potassium, sodium, chlorine, calcium, phosphorus, etc.), thyroid function, drug detection, AIDS detection, Tumor markers, PCR, TORCH, serum immunological tests, etc.

• Anticoagulant

Heparin tube (green cap): suitable for erythrocyte osmotic fragility test, blood gas, plasma permeation, hematocrit, erythrocyte sedimentation rate and common biochemical determination.

Blood routine tube (purple hat): used for general hematology (blood routine) examination and blood ammonia detection. Can not be used for blood coagulation, trace element examination.

Blood coagulation tube (blue cap): used in the fibrinolytic system (prothrombin time, thrombin time, activated partial thrombin time, fibrinogen).

ESR tube (black hat): generally used for blood sedimentation detection.

Blood glucose tube (grey): widely used in blood glucose, glucose tolerance, red blood cell electrophoresis, anti-alkaline hemoglobin, sugar hemolysis and other items.