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Test Name:
Thyroxine Binding Globulin
- SBMF No:
44307 - Performance Lab Name:
ARUP Laboratories - Test Mnemonic:
TBG- - ABN:
Not required - CPT Code:
84442 - LOINC Code:
3021-3 - Ref Lab Test No:
0070410 - Also Known As:
TBG - Spec Type:
Serum - Spec Container:
Gold top (SST) or red top (serum) tube - Pref Vol:
0.5 mL - Min Vol:
0.4 mL - Fasting:
No - Spec Collect:
Routine venipuncture - Spec Process:
Clot 30 minutes
Promptly centrifuge 15 minutes
Immediately transfer serum to separate plastic tube and freeze - Spec Store Transport:
Frozen - Spec Stability:
8 hours room temperature (20-30°C)
2 days refrigerated (2-8°C)
1 month frozen (-20°C) – Do not use frost-free units that undergo repeated freeze/thaw cycles - Spec Reject:
Plasma sample
Grossly hemolyzed or lipemic sample - Methodology:
Chemiluminescent Immunoassay (CLIA) - Clinical Significance:
Refer to:
- Reference Range:
13.0-30.0 µg/mL - Day Run:
Mon, Wed, Fri - Time Reported:
2-5 days - Test Type:
HORMONE
