The evacuated tubes fill with blood automatically because of a vacuum that exists inside the tube. The amount of vacuum is pre-measured so that the tube will draw a precise amount of blood. A tube that has lost its vacuum will not fill with blood.
- Which of the following additives prevents glycolysis?
- How could Toru have avoided the problem without drawing blood from the patient twice?
- Which of the following tubes can be used to collect a serum specimen?
- What is potassium oxalate in phlebotomy?
- How does potassium oxalate work as anticoagulant?
- What is the purpose of sodium fluoride in phlebotomy?
- Why sodium fluoride is used as anticoagulant?
- Which color is the tube and stopper that is used to collect specimens for serum analysis?
- What color phlebotomy tube is used to collect specimens for serum quizlet?
- How does EDTA act as an anticoagulant?
Which of the following additives prevents glycolysis?
Sodium fluoride.
How could Toru have avoided the problem without drawing blood from the patient twice?
How could Jake have avoided the problem without drawing blood from the patient twice? If the situation were to arise in the future, Jake could draw a few milliliters of blood into a plain discard tube to flush possible contamination from the needle before collecting the green top tube.
Which of the following tubes can be used to collect a serum specimen?
Serum is usually collected in mottled red/gray, gold, or cherry red-top tubes, and red-top tubes are occasionally used. Plasma is obtained from blood that has been mixed with an anticoagulant in the collection tube and has, therefore, not clotted.
Spc Mls 413 (Hematology 1) Evacuated Tube System Collection Method
What is potassium oxalate in phlebotomy?
Potassium oxalate is an anticoagulant which binds the calcium enabling the glucose determination to be performed on plasma.
How does potassium oxalate work as anticoagulant?
The usual explanation offered for this phenomenon (4) is that potassium oxalate, by increasing the osmotic pressure of plasma, draws water from the red blood cells, thus diluting plasma and concentrating the red blood cells.
What is the purpose of sodium fluoride in phlebotomy?
Sodium fluoride acts as the glycolytic inhibitor and prevents the cells in the blood from utilizing the glucose. It acts as a glucose preservative, but not as an anticoagulant. Potassium oxalate is an anticoagulant which binds the calcium enabling the glucose determination to be performed on plasma.
Phlebotomy
Why sodium fluoride is used as anticoagulant?
Sodium Fluoride Mechanism of action: It acts in two ways: As an anticoagulant by binding the calcium. As an enzyme inhibitor that prevents the glycolytic enzyme from destroying the glucose. Sodium fluoride acts after the enolase, so it will not be effective in the first 1 to 2 hours.
Which color is the tube and stopper that is used to collect specimens for serum analysis?
Thixotropic gel can be found in some tubes, including serum separator tubes (SST). SST tubes are identified by the marbled red-gray rubber stopper and the gold Hemogard top.
Blood Draw
What color phlebotomy tube is used to collect specimens for serum quizlet?
Gold/tiger-top tubes are used for what? Collecting serum. These are SSTs : serum separator tubes.
How does EDTA act as an anticoagulant?
The mechanism of EDTA anticoagulant action is based on inhibition of thrombocyte aggregation and various reactions of hemostatic cascade due to chelation of free Ca2+ ions. Blood cells of various animals show different reactions to various anticoagulants.