| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Thyroxine, Free (Free T4)
Test Code2205
Alias/See Also
T4, Free; Free T4
Preferred Specimen
One 4 mL serum separator tube or plasma separator tube.
Minimum Volume
1 mL serum or plasma at 2-8°C. (Min: 0.5 mL) Submit specimen in original tube.
Transport Temperature
1 mL serum or plasma at 2-8°C. (Min: 0.5 mL) Submit specimen in original tube.
Specimen Stability
After separation of cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 1 month
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Grossly hemolyzed specimens.
Methodology
Immunoassay
Setup Schedule
Sun-Sat
Report Available
Within 24 hours
Limitations
Allow serum to clot completely at room temperature. Separate serum or plasma from cells ASAP.
