QuantiFERON-TB Gold In-Tube

QuantiFERON-TB Gold In-Tube, cont.

November 2009

Following a successful run, the results of QuantiFERON In-Tube are reported out as positive, negative, or indeterminate. An indeterminate result implies that the level of interferon gamma detected by the ELISA was between the cutoff for positive and negative. An indeterminate result may be due to several factors. First, it may be due to a low mitogen (or positive control) response. This can occur in immunocompromised patients, or from improper mixing of the collection tubes. The second scenario which may result in an indeterminate is a high nil (or negative control) value. This may result from improper collection, incubation, transport or processing of the collection tubes.

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QuantiFERON-TB Gold In-Tube, cont.

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Jump to section:

• Introduction
• The Global Impact of Tuberculosis
• Conventional Diagnosis of Latent Tuberculosis Infection (LTBI)
• Limitations of TST
• Interferon Gamma Release Assays (IGRA): An Alternative to TST?
• QuantiFERON-TB Gold In-Tube
• QuantiFERON-TB Gold In-Tube, cont.
• QuantiFERON-TB Gold In-Tube, cont.
• QuantiFERON-TB Gold In-Tube Advantages over TST
• QuantiFERON-TB Gold In-Tube Limitations
• QuantiFERON-TB Gold In-Tube Applications
• QuantiFERON-TB Gold In-Tube Applications, cont.
• QuantiFERON-TB Gold In-Tube Applications, cont.
• QuantiFERON-TB Gold In-Tube Applications, cont.
• QuantiFERON-TB Gold In-Tube Applications, cont.
• QuantiFERON-TB Gold In-Tube Applications, cont.
• QuantiFERON-TB Gold In-Tube Applications, cont.
• QuantiFERON-TB Gold In-Tube Applications, cont.
• Information for Collection Sites Keys to Accurate Performance
• Blood Collection
• Blood Collection, cont.
• Blood Collection, cont.
• Blood Collection, cont.
• Mixing of Blood Collection Set
• Mixing of Blood Collection Set
• Storage and Incubation
• Storage and Incubation
• Incubation
• Centrifugation of Collection Tubes
• Shipping Specimens
• QuantiFERON-TB Gold In-Tube Conclusions
• Questions?