MRCP UK EXAMINATIONS

Detailed explanation-1: -This tube contains sodium heparin used for the collection of heparinized plasma or whole blood for special tests.

Detailed explanation-2: -The green tubes contain heparin (can either be in the form of sodium heparin, lithium heparin, or ammonium heparin), which acts as an anticoagulant by inhibiting thrombin formation. Unlike red tubes, the type of blood produced in a green tube needed for testing is not serum but plasma.

Detailed explanation-3: -Green-top tube: Contains sodium heparin or lithium heparin. Use: Heparinized whole blood or plasma. Send plasma in a plastic transport tube labeled “Plasma, Sodium Heparin” or “Plasma, Lithium Heparin.” Send whole blood in a green-top tube. Yellow-top tube: Contains acid citrate dextrose (ACD) solution.

Detailed explanation-4: -A lithium heparin tube, which has a light green-top and is the electrolytes tube color, is preferred for testing electrolyte levels. This is because lithium heparin may provide better accuracy in testing a person’s electrolyte levels than a sodium heparin tube, since sodium is an electrolyte.

Detailed explanation-5: -Sodium Heparin or Lithium Heparin Tubes are used to produce plasma for biochemical testing. The Heparin Tubes are also available with Gel separator. The range of application is: clinical chemistry and trace mineral testing.