color guide blood collection tubes

1. Common Serum Tube Red Cap
The blood collection tube contains no additives, no anticoagulant or procoagulant ingredients, only vacuum. It is used for routine serum biochemistry, blood bank and serology related tests, various biochemical and immunological tests, such as syphilis, hepatitis B quantification, etc. It does not need to be shaken after blood drawing. The type of specimen preparation is serum. After blood is drawn, it is placed in a 37°C water bath for more than 30 minutes, centrifuged, and the upper serum is used for later use.
2. Quick Serum collection tubes for blood Orange Cap
There is a coagulant in the blood collection tube to speed up the coagulation process. The rapid serum tube can coagulate the collected blood within 5 minutes. It is suitable for emergency serum series tests. It is the most commonly used coagulation test tube for daily biochemistry, immunity, serum, hormones, etc. After blood is drawn, invert and mix 5-8 times. When the temperature is low, it can be placed in a 37°C water bath for 10-20min, and the upper serum can be centrifuged for later use.
3. The golden cap of the inert separation gel accelerator blood tube collection Manufacturer in China
Inert separating gel and coagulant are added to the blood collection tube. Specimens are stable for 48 hours after centrifugation. Procoagulants can quickly activate the coagulation mechanism and accelerate the coagulation process. The type of specimen prepared is serum, which is suitable for emergency serum biochemical and pharmacokinetic tests. After collection, invert and mix 5-8 times, stand upright for 20-30 min, and centrifuge the supernatant for later use.
4. Sodium citrate ESR test tube black cap
The sodium citrate concentration required for the ESR test is 3.2% (equivalent to 0.109 mol/L), and the ratio of anticoagulant to blood is 1:4. Contain 0.4mL of 3.8% sodium citrate, and draw blood to 2.0mL. This is a special test tube for erythrocyte sedimentation rate. The sample type is plasma, which is suitable for ESR. Immediately after blood drawing, invert and mix 5-8 times. Shake well before use. The difference between it and the test tube for coagulation factor testing is that the concentration of anticoagulant is different from the blood ratio, which should not be confused.
5. Sodium citrate coagulation test tube light blue cap
Sodium citrate mainly acts as an anticoagulant by chelating calcium ions in blood samples. The anticoagulant concentration recommended by the National Committee for Standardization of Clinical Laboratories is 3.2% or 3.8% (equivalent to 0.109mol/L or 0.129mol/L), and the ratio of anticoagulant to blood is 1:9. The vacuum blood collection tube contains about 0.2 mL of 3.2% sodium citrate anticoagulant, and the blood is collected to 2.0 mL. The type of specimen preparation is whole blood or plasma. Immediately after collection, invert and mix 5-8 times. After centrifugation, take the upper plasma for use. Suitable for coagulation experiments, PT, APTT, coagulation factor examination.
6. Heparin anticoagulation tube with green cap
Heparin was added to the blood collection tube. Heparin directly has the effect of antithrombin, which can prolong the coagulation time of the specimen. For emergency and most biochemical experiments, such as liver function, kidney function, blood lipids, blood sugar, etc. It is suitable for red blood cell fragility test, blood gas analysis, hematocrit test, erythrocyte sedimentation rate and general biochemical determination, but not suitable for blood coagulation test. Excessive heparin can cause aggregation of white blood cells and cannot be used for white blood cell counts. It is also not suitable for leukocyte classification because it can make the blood film stained with a light blue background. It can be used for blood rheology. The sample type is plasma. Immediately after blood collection, invert and mix for 5-8 times, and take the upper plasma for use.
7. Light green cap of plasma separation tube
Adding heparin lithium anticoagulant to the inert separation rubber tube can achieve the purpose of rapid separation of plasma, which is the best choice for electrolyte testing. For emergency and most biochemical experiments, such as liver function, kidney function, blood lipids, blood sugar, etc. Plasma samples can be loaded directly on the machine and are stable for 48 hours under refrigeration. It can be used for blood rheology. The sample type is plasma. Immediately after blood collection, invert and mix for 5-8 times, and take the upper plasma for use.

8. Potassium oxalate/sodium fluoride grey cap
Sodium fluoride is a weak anticoagulant, which is usually used in combination with potassium oxalate or sodium ethiodate, and its ratio is 1 part of sodium fluoride and 3 parts of potassium oxalate. 4mg of this mixture can make 1ml of blood not coagulate within 23 days and inhibit the decomposition of sugar. It cannot be used for the determination of urea by urease method, nor for the determination of alkaline phosphatase and amylase. It is recommended for blood sugar testing. It contains sodium fluoride or potassium oxalate or disodium ethylenediaminetetraacetate (EDTA-Na) spray, which can inhibit the enolase activity in glucose metabolism. After drawing blood, invert and mix 5-8 times. The liquid plasma is reserved for use, and it is a special tube for rapid blood glucose measurement.
9. EDTA anticoagulation tube purple cap
Ethylenediaminetetraacetic acid (EDTA, molecular weight 292) and its salts are an amino polycarboxylic acid, suitable for general hematology tests, and are the preferred test tubes for blood routine, glycosylated hemoglobin, and blood group tests. Not suitable for coagulation test and platelet function test, nor for the determination of calcium ion, potassium ion, sodium ion, iron ion, alkaline phosphatase, creatine kinase and leucine aminopeptidase, suitable for PCR test. Spray 100ml of 2.7% EDTA-K2 solution on the inner wall of the vacuum tube, blow dry at 45°C, collect blood to 2ml, invert and mix 5-8 times immediately after blood draw, and mix well for use. The sample type is whole blood, which needs to be mixed evenly before use.