QFTBT - "Quantiferon TB Plus 1-Tube" - Warde Medical Laboratory

New Test

Effective Date

11/11/2025

Included in Report

WML Test Directory Quantiferon Update | November 2025

Updated Test

QUANTIFERON TB PLUS 1-TUBE

Test Details

Mnemonic

QFTBT

Ordering Code

3000897

CPT-4 Codes(s)

86480

Turnaround Time

3 - 5 days

Performed

Monday - Friday

Legacy Code

QFTBT

Example Report

Download

Specimen Information

The specimen must be submitted in the Warde-provided collection tube due to the requirements of the laboratory automation. No other lithium-heparin tubes are acceptable.
Collect and send sample Monday thru Friday only. Do not collect on Saturday and Sunday, holidays, or the day before a holiday.

Collection instructions can be found here.

Collect

Quantiferon - TB Green lithium heparin

Specimen Preparation

Collect 6.0 mL of whole blood directly into a Warde provided Quantiferon-TB Plus green lithium heparin collection tube. Slowly invert the tube a minimum of 10 times to dissolve the heparin. Allow tube to sit at room temperature for 15 minutes. After 15 minutes at room temperature, refrigerate the specimen within three hours of collection and transport to Warde. Send the specimen to Warde the same day it is collected.

Minimum Volume

5.0 mL

Transport Temperature

Refrigerated

Rejection Criteria

Frozen whole blood, plasma, clotted sample, specimens not in Warde provided Quantiferon - TB lithium heparin collection tubes, specimens received in collection tubes containing less than 5 mL

Stability

Room temperature: 3 hours
Refrigerated: 48 hours
Frozen: Unacceptable

Methodology

Chemiluminescence Immunoassay (CLIA)

Reference Range

Negative

Performing Laboratory

Warde Medical Laboratory

New York DOH Approval Status

Yes

Test Name	Ordering Code	Result Code	Component Name	LOINC Code	AOE Prompt
Quantiferon TB Plus 1-Tube	3000897
		3000898	Nil	71776-9	No
		3000899	Mitogen	71772-8	No
		3000901	TB Ag 1	46217-6	No
		3000902	TB Ag 2	88518-6	No
		3000903	Quantiferon TB Plus	71773-6	No

The CPT codes provided are for general informational purposes only and are based on an interpretation of AMA guidance. It is the sole responsibility of the billing party to determine CPT codes. Any questions regarding coding should be directed to the paying party.

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QFTBT – “Quantiferon TB Plus 1-Tube”