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Test Code QTBG QuantiFERON-TB Gold Plus

Specimen Type

Whole Blood

Container/Tube

Four special tubes (Gray cap with white ring,Green cap with
white ring, Yellow cap with white ring, and Purple cap with
white
ring)

Offsite Collection Instructions

 1. Collect 1 mL of blood by venipuncture directly into
each of the QFT-Plus Blood Collection
Tubes.

2. Tube may fill slowly. Hold tube for 2-3 seconds after
flow
ceases.

3. If a “butterfly needle” is being used to collect
blood, a
“purge” tube should be used to ensure that the tubing
is filled
with blood prior to the QFT-Plus
Collection Tubes used.

4. Immediately after filling the tubes, shake them ten (10)
times enough to make sure the entire inner surface of the tube
is
coated with blood.

5.Store at room temperature. DO NOT
refrigerate.

6. Specimens must arrive at UCMC
Laboratories as soon as
possible, or within 10 hours from collection time.

Turnaround Time

3 to 4 days

Preferred Volume

4mL total ( 1mL per tube)

UCMC Collection Instructions

1. Collect 1 mL of blood by venipuncture directly into each
of
the QFT-Plus Blood Collection Tubes.

2. Tube may fill slowly. Hold tube for 2-3 seconds after
flow
ceases.

3. If a “butterfly needle” is being used to collect
blood, a
“purge” tube should be used to ensure that the tubing
is filled
with blood prior to the QFT-Plus
Collection Tubes used.

4. Immediately after filling the tubes, shake them ten (10)
times enough to make sure the entire inner surface of the tube
is
coated with blood.

5.Store at room temperature. DO NOT
refrigerate.

6. Send to Laboratory Service Center (LSC) tube station #201 as
soon as possible, or within 4 hours from collection time.

 

Specimen Minimum Volume

4mL total (1mL per tube)

DAY(S) AND TIME(S) PERFORMED

Monday through Friday

STAT DAY(S) AND TIME(S) PERFORMED

Not available

CPT

86480

Method Name

Enzyme-linked Immunosorbent assay (ELISA)

Reference Values

Negative