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Test Code LAB128 Thyroxine-Binding Globulin (TBG)

Department

SEND OUTS

Reference Lab Test Number

TBG

Refer To

Warde Medical Laboratory

Primary Collection Container

Gold (SST)

Alternate Collection Container

Red (No Gel)

Transport

Serum frozen

Preferred Transport Temperature

Frozen

Processing

Centrifuge, separate and send 1.0 mL serum in a screw-capped plastic vial.

Stability

Ambient: Undetermined

Refrigerated: 2 days

Frozen: 1 month

Minimum Testing Volume

0.5 mL

Reference Range

14.0-31.0 µg/mL

Methodology

Chemiluminescence

Performed

Monday – Friday

Reported

4 days

CPT Codes

84442

Unacceptable Conditions

Hemolyzed, grossly lipemic specimens, plasma.