QuantiFERON®-TB Gold Plus:

QuantiFERON®-TB Gold Plus (QFT-Plus) advances the science of tuberculosis (TB) blood testing, offering advantages over both its predecessor and the conventional tuberculin skin test.1,2

The resources below can help you ensure proper use of the test—and the most accurate results.

QuantiFERON-TB Gold Plus flyer

You and your patients can benefit from greater convenience with the next generation of TB testing from Quest Diagnostics: QuantiFERON-TB Gold Plus. Learn more about the test’s benefits.

Download flyer

QuantiFERON-TB Gold Plus blood collection training videos

QFT-Plus offers 2 blood collection options, including the option to draw into 1 tube. Watch our training videos for complete blood collection instructions for both options.

1-tube collection

4-tube collection

QuantiFERON-TB Gold Plus collection instructions

Review the step-by-step requirements for each blood collection option.

Download 1-tube instructions

Download 4-tube instructions

QuantiFERON-TB Gold Plus, now replacing QuantiFERON-TB Gold

QuantiFERON-TB Gold Plus replaces the QuantiFERON-TB Gold test, advancing the science of TB testing. Be sure to add QFT-Plus test information to your EHR.

Result Code Result Name Unit of Measure LOINC Code Component Name
86023520 QuantiFERON®-
TB Gold Plus, 1 Tube
  45323-3 Mycobacterium tuberculosis tuberculin stimulated gamma interferon
86023521 NIL U/mL 46217-6 Mycobacterium tuberculosis tuberculin stimulated gamma interferon
86023522 Mitogen-NIL IU/mL 46216-8 Mycobacterium tuberculosis tuberculin stimulated gamma interferon/Mitogen stimulated gamma interferon
86023523 TB1-NIL IU/mL 6408A-7 Mycobacterium tuberculosis stimulated gamma interferon corrected for background
86023524 TB2-NIL IU/mL 64084-7 Mycobacterium tuberculosis tuberculin stimulated gamma interferon/Mitogen stimulated gamma interferon

Rely on accurate, efficient, and objective TB detection

Learn more about QuantiFERON-TB Gold Plus
Contact a Quest sales representative


  1. Lewisohn, DM, Leonard MK, LoBue PA, et al. Official American Thoracic Society/Infectious Diseases Society of America/Centers for Disease Control and Prevention clinical practice guidelines: diagnosis of tuberculosis in adults and children. Clin Infect Dis. 2017;64(2):111-115. DOI: 10.1093/cid/ciw694. https://www.cdc.gov/tb/publications/guidelines/pdf/cid_ciw694_full.pdf
  2. Mazurek GH, Jereb J, Vernon A, et al. Updated guidelines for using interferon gamma release assays to detect mycobacterium tuberculosis infection. MMWR. 2010;59(RR05):1-25. https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5905a1.htm.