T4, Free (Thyroxine, Free)
Methodology
Utilizes a two-step enzyme immunoassay
Test Utility
For the quantitative determination of free thyroxine levels in human serum and plasma.
Specimen Collection and Preparation
Serum or plasma sample in the following tubes:
Serum separator tube (gold or tiger top)
Lithium heparin (green top)
Specimen Storage and Stability
Store serum or plasma at the following temperatures:
Room temperature: 15°C to 30°C no longer than 8 hours
Refrigerated: 2°C to 8°C up to 48 hours
Frozen: -20°C or lower up to 7 days
Specimen Rejection
Broken or leaking tube
Insufficient sample volume
Frozen whole blood
Specimen hemolyzed
Specimen labeled incorrectly or not labeled
Reference Pages
Performed
Monday – Sunday, 16 hours a day
Result available within 24 hours of receipt in laboratory
NOTE: Specimens are refrigerated (2-8°) for 7 days before disposal
Contacts
Vibra Health Laboratory
1307- A, Allen Dr Troy, MI 48083
(248) 846-0663