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QuantiFERON-TB Gold In-Tube

Applications and Keys to Accurate Performance


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Blood Collection

Slide 20

November 2009

As I mentioned, the first step involves collection of whole blood into the specialized three tube set provided by the testing laboratory. It is extremely important to draw exactly 1-mL of blood into each of the 3 tubes. There’s a black mark on the side of each tube that indicates the 1-mL fill line. Although the valid range for this test is between 0.8 and 1.2 mL, I encourage laboratories to fill as closely to the fill-line as possible.

Blood Collection


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