Clinical Trials

Inclusion Criteria:

• Patients and subjects 18 years or older and in stable medical condition.
• Patients at low risk for TB infection:
  • Being born in a low-incidence TB area, and low risk for contact with TB cases (i.e., no prior work or history of staying in a potentially TB transmissible area such as inpatient hospital facility, jail or prison, or nursing home); or
  • Who also are tested for job screening purposes or prior to initiation of immunosuppressive therapy.
• Patients at intermediate to high risk for TB infection: Recent TST or IGRA testing, or clinical indication for either TST or IGRA testing (i.e., Contacts of TB cases, foreign-born subjects without other risk factors for TB infection, patients on immunosuppressive therapy, chronic medical conditions at risk of TB infections, healthcare worker screening, etc.). We will also include patients with history of prior discordant TST and QuantiFERON TB Gold/In-Tube™ results.
• Patient with recent diagnosis of culture-proven TB infection or on treatment for active TB, pending final culture results.
• Signed written informed and HIPAA consent.

Exclusion Criteria:

• Patients younger than 18 years old.
• Patients unable to perform the study protocol.
• Patients unwilling or unable to give written informed consent.