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- '99 Thyroid Profile (Compliance)
Free thyroxine index; T3 uptake (THBR); thyroxine (T4)
FTI is a physiologic index of metabolic activity that correlates with free thyroxine (T4)
Electrochemiluminescence Immunoassay (ECLIA)
0.5 mL (Note: This volume does not allow for repeat testing.)
Red-top tube or gel-barrier tube
If a red-top tube is used, transfer separated serum to a plastic transport tube.
This test may exhibit interference when sample is collected from a person who is consuming a supplement with a high dose of biotin (also termed as vitamin B7 or B8, vitamin H, or coenzyme R). It is recommended to ask all patients who may be indicated for this test about biotin supplementation. Patients should be cautioned to stop biotin consumption at least 72 hours prior to the collection of a sample.
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|000455||Thyroid Panel||001149||Thyroxine (T4)||ug/dL||3026-2|
|000455||Thyroid Panel||001156||T3 Uptake||%||3050-2|
|000455||Thyroid Panel||001164||Free Thyroxine Index||32215-6|