INTERFERON GAMMA (QUANTIFERON TB), PLASMA

Modification Reference values

Test code: 3147

PREVIOUS Reference values

CURRENT  Reference values

Less than 16 ngr/mL

NEGATIVE CONTROL: Less than 8 UI/mL Ag TB-NC:         Less than 0.35 UI/mL POSITIVE-NT CONTROL: Greater than 10 UI/mL    The Quantiferon TB Gold In-Tube test is an indirectect screening analysis for infection by Mycobacterium tuberculosis with uses specific peptides from the M.tuberculosis complex (Ag TB). The specificity of the test is excellent (99%) and its sensibility is greather than that of TST (84%). (Diel et coll, chest, 2010). However, a positive Quantiferon test result cannot distinguish between a latent or active infection. This test cannot date the infection.

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