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Test Code TBGRN & QFT QuantiFERON TB Gold Plus

Important Note

Collection of testing on Fridays, Saturdays or Sundays is discouraged.

 

Effective 10/8/24 - Order QFT (LAB2820) AND TBGRN (LAB4529)

A total of five (5) labels will print for the one (1) tube collected. Place label with test code TBGRN on the tube, send all unused labels with the labeled green tube in a biohazard bag to the laboratory.
 

Note: Specimen may be held at room temperature for no more than 15 minutes before it needs to be refrigerated. 

 

Additional Codes

Epic EAP

LAB2820 QFT

AND

LAB4529 TBGRN

Specimen Requirements

Container/Tube Type: 

Special 6.0 mL Lithium Heparin Collection Kit
Available from Laboratory

 

Collection Information: 

Collect full Greiner 6.0 mL Li Heparin tube with no gel that is provided in the TB Gold collection kit .  Refrigerate immediately.

TB Collection kits are available by contacting the Laboratory.

 

Outpatient Collection Kit example:

 

 

Transport Information: 

Transport refrigerated specimens to laboratory within 24 hours of collection.  This testing requires refrigerated incubation for 24 hours and a 37 degree C incubation for 24 hours prior to the actual analysis.  Please allow 7 days for the testing to be completed.

 

Collection of testing on Fridays or Saturdays is discouraged.

 

 

Minimum Sample Volume: 

5.0 mL of whole blood

Performing Laboratory

Pathology Laboratory, UnityPoint Health, Des Moines

CPT

86481

Stability

Stability

Refrigerated Stability: 

24 hours

Performance

Analysis performed on Tuesday, Wednesday and Friday, but may vary.

 

Analytical Time: 

3 - 7 days

Alias

Mycobacterium tuberculin Stimulated Gamma Interferon (Presence) in Blood; Interferon-gamma release assay (IGRA)