Serum TBG Level

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How is the Test Performed?

Blood is drawn from a vein, usually on the inside of the elbow or the back of the hand. The area where blood is to be drawn is cleaned with antiseptic, and a tight elastic band is placed around the upper arm to apply pressure and restrict blood flow through the vein. This causes veins below the band to fill with blood.

A needle is inserted into the vein, and the blood is collected in an air-tight vial or a syringe. Once the blood has been collected, the band is removed to restore circulation, the needle is removed, and the puncture site is covered to stop any bleeding.

The sample is then taken to the laboratory where it is evaluated by special laboratory tests, such as electrophoresis or radioimmunoassay.