AFB TB Interferon Antigen Response (TBINTF)  

IMPORTANT! Pre-approval needed from state or local health department. Local or State Health Department. Send approval to or call (402) 559-9444.

NPHL has moved to an electronic ordering system, NUlirt, and it is now the preferred method to order all tests. Once ordered, print a "batch list" (see NUlirt Guide).

Forms Required - Nulirt batch list or NPHL Test Request Form (completed in entirety) must accompany the specimen to include the following information: symptoms and date of onset, pregnancy status, travel and vaccine history. Testing will not be performed without all required information.

Please call NPHL Client Services at (402) 559-2440 or toll free at (800) 334-0459 for further clarification.


Test: AFB TB Interferon Antigen Response  
Synonym: TB Quant, IGRA, Interferon Gamma Release Assay, QuantifFeron-TB Gold  
Collection Device:  
  • For shipping of isolates, see Category A instructions
  • For shipping patient specimen, see Category B instructions
  • Seal tubes with Parafilm or tape and place in biohazard bag with absorbent material
  • NUlirt packing list or appropiate paperwork (completed in entirety) must accompany specimens


Specimen Stability:  
Reference Interval:  
Reportable Disease:  
Comments: Test performed at Nebraska Medicine  
Revised: 3/5/2024 
If you have questions about proper specimen collection, please call NPHL Client Services at (402) 559-2440 or toll free at (800) 334-0459.