T4 (Thyroxine), Total
Main Content
Test Code: 867
Methodology: Immunoassay (IA)
Clinical Significance: For diagnosis of hypothyroidism and hyperthyroidism
Note: Free T4 Index (T7) will only be calculated and reported if order code 861 (T3 Uptake) is ordered as well.
Additional names: T4; T-4 (RIA); T4 Total; Tetraiodothyronine; Thyroxine; Thyroxine T4; Thyroxine Total
Collection Guide:
Supply: T01 - Red/Gray SST 8.5mL
Preferred Specimen: Serum
Preferred Volume: 1mL
Transport Container: Serum Separator Tube (SST)
Transport Temperature: Room Temperature
Specimen Stability: Room Temperature: 7 Days
Reject due: Specimens exceeding stability; Unlabeled or improperly labeled specimens
For additional supply or collection device information, please contact DLO's Customer Service at (800) 891-2917, option 2.
CLIA