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Test Code LAB3698 QuantiFERON-TB Gold Plus, Blood

Important Note

Core Lab: Read instructions completely (click the blue link below) before processing.

Mycobacterium tuberculosis Infection Determination by Quanti-FERON-TB Gold Plus Collection and Processing Instructions

Core Team Note 1:There are additional incubation instructions at the bottom of the pdf in the link.

Core Team Note 2: Specimens must be taken out of the bag and stored upright in the tall skinny rack when placed in the incubator. The bag and aliquot label must be placed in the Special Chemistry overnight bin.

Core Team Note 3: Leave a note or print screen on the shield in SC processing to indicate the start time of the incubation.

Core Team Note 4: If the volume of tubes is inadequate (see instructions for fill line) please request recollection.

Additional Codes

Mayo test code: QFT4


Ordering Guidance


This test is not recommended for use for diagnosis of active tuberculosis (TB) infection. It can be used as an aid to detect latent TB infection.



Specimen Required


Supplies:

-QuantiFERON-TB Gold Plus Collection Kit (T794)

-QuantiFERON-TB Gold Plus HIGH ALTITUDE Collection Kit (T795)

Collection Instructions:

1. Special collection, incubation, and centrifugation procedures must be followed.

2. For blood collection options (1-tube collection or 4-tube collection) and specimen transport instructions, see Mycobacterium tuberculosis Infection Determination by Quanti-FERON-TB Gold Plus Collection and Processing Instructions (T688).


Useful For

Indirect test for Mycobacterium tuberculosis infection, to be used in conjunction with risk assessment, radiography, and other medical and diagnostic evaluations

 

This test is not recommended for use for diagnosis of active tuberculosis infection.

Method Name

Chemiluminescence Immunoassay (CLIA)/Enzyme-Linked Immunosorbent Assay (ELISA) as appropriate

Reporting Name

QuantiFERON-Tb Gold Plus, B

Specimen Type

Whole blood

Specimen Minimum Volume

4 mL: 1 mL per tube (4 tubes)

Specimen Stability Information

Specimen Type Temperature Time Special Container
Whole blood Refrigerated 28 days QTBKIT

Reject Due To

Specimen submitted not following kit guidelines Reject
Gross hemolysis Reject
Gross lipemia Reject
Gross icterus Reject

Reference Values

Negative

Day(s) Performed

Monday through Friday

Report Available

2 to 5 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

86480

LOINC Code Information

Test ID Test Order Name Order LOINC Value
QFT4 QuantiFERON-Tb Gold Plus, B 71775-1

 

Result ID Test Result Name Result LOINC Value
QFTQ2 QuantiFERON-Tb Gold Plus Result 71773-6
DEXQE TB1 Ag minus Nil Result 64084-7
DEXQF TB2 Ag minus Nil Result 88517-8
DEXQG Mitogen minus Nil Result 71774-4
DEXQH Nil Result 71776-9

Forms

If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:

-General Request (T239)

-Infectious Disease Serology Test Request (T916)

-Microbiology Test Request (T244)