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Test Code QFTB TB Testing By Quantiferon Gold TB, LAB2820

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements

Specimen must be drawn by the laboratory using a QuantiFERON Gold Collection Kit.


Container/Tube: QuantiFERON Gold Collection Kit

Specimen Volume: Fill to black line, approximately 1 mL

Collection Instructions:

1. Draw specimen using special draw requirements included in kit.  Collection kits available from the laboratory upon request.

2. Shake each tube for 5 seconds, then incubate within 16 hours at 37° C. If not incubated immediately, keep tubes at ambient temperature and shake each tube again for 5 seconds immediately prior to incubation. Tubes must then incubate for 16-24 hours before they are spun and tested.

3. Once specimens are incubated and spun, they are good at refrigerator temperature for up to 4 weeks.

Specimen Transport Temperature

Ambient (20-30° C)/Refrigerate NO/Frozen NO

Reference Values


Day(s) Test Set Up

Tuesday, Thursday

Specimens may be received by St. Luke’s Laboratory Monday through Sunday.


Enzyme-Linked Immunosorbent Assay (ELISA)

Test Classification and CPT Coding