Quantiferon TB Gold Plus

Container Type

Special Collection Kit:

See Comments

Test ID

LAB5902A

EPIC Order

QUANTIFERON TB GOLD Plus

CPT Code(s)

86480

Group/Individual Test

Group

Laboratory

Clinical Immunology

Tube Station

30

Specimen

Routine:

1 mL blood into 4 special collection tubes; See Important Collection Comments

Availability

Routine:

5 times per week: Mon-Fri

Turnaround Time

3-7 days

Reference Range

Normal:

Negative

Interpretation Guidelines:

Nil (IU/mL)	TB1 minus NIL (IU/mL)	TB2 minus NIL (IU/mL)	Mitogen minus NIL (IU/mL)	QFT-Plus Result	Report/ Interpretation
≤8.0	≥0.35 and ≥25% of Nil	Any	Any	Positive	M. tuberculosis infection likely.
	Any	≥0.35 and ≥25% of Nil		Positive	M. tuberculosis infection likely.
	<0.35 OR ≥0.35 and <25% of Nil	<0.35 OR ≥0.35 and <25% of Nil	≥0.50	Negative	M. tuberculosis infection NOT likely
	<0.35 OR ≥0.35 and <25% of Nil	<0.35 OR ≥0.35 and <25% of Nil	<0.50	Indeterminate	Likelihood of M. tuberculosis infection cannot be determined.
>8.0	Any	Any	Any	Indeterminate

Comments

THIS SAMPLE CANNOT BE DRAWN FROM LINES. Call Immunology (984) 974-1815 for the collection kits for inpatients. Call Outreach (984) 974-1810 for collection kits for clinics and affiliates.
Order will generate five (5) specimen ID Labels, one for each tube in the collection kit and one for the Lab Specimen bag. All four tubes in kit must contain specimen and be labeled.
Samples must be received in the appropriate processing laboratory within 16 hours of collection. Samples should remain Room Temperature until processed. Once processed (incubated and centrifuged), send specimens to UNC McLendon Laboratory at 2-8°C.

Reviewed by J. Carr on November 04, 2025

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514