Sign in →

Test Code 2500 Quantiferon TB Gold

Important Note

Due to limited specimen stability specimens are collected only at a Hospital Outpatient Laboratory

Do not collect on weekends, holidays or the day before a holiday

Specimens are not to be drawn before 7AM

Specimens must be received in Central Processing by 12:00PM

Specimen Containers and Fixatives

Lithium Heparin Green Top Tube provided in Quest kit

Specimen Required

6.0 mL Lithium Heparin Green Top, refrigerated

Client Special Instructions

  1. Collect 6 mL by venipuncture in lithium heparin green top tube provided in the Quest kit.
  2. Hold tube at room temperature between 15 minutes to 3 hours after collection.
  3. Refrigerate.  Specimen is stable for up to 48 hours refrigerated after collection.

Day(s) and Time(s) Performed

Monday – Friday, 5 days

Reference Values


There is limited data to support the use of this test on patients between 5 and 17 years old.

Do not use the assay on patients <5 years old.

Method Name


CPT Code Information


LOINC Code Information

QFTB Plus  45323-3

NIL  46217-6

Mitogen-NIL  46216-8

TB1-NIL  64084-7

TB2-NIL  64084-7