Thyroid Profile D (Comprehensive)

CPT Test code: 84436;84443;84479;84480

Related Documents:	Thyroid Cascade Testing: Differential Laboratory Diagnosis of Thyroid Function
Test Includes:	Free thyroxine index (FTI); T₃ uptake (THBR); thyroid-stimulating hormone (TSH); thyroxine (T₄); tri-iodothyronine (T₃)
Specimen:	Serum
Volume:	2.5 mL
Minimum Volume:	1.5 mL (Note: This volume does not allow for repeat testing.)
Container:	Red-top tube or gel-barrier tube
Collection:	If a red-top tube is used, transfer separated serum to a plastic transport tube.
Storage Instructions:	Refrigerate
Causes for Rejection:	Plasma specimen