Significant deviations from the normal range may require further evaluation by your physician.
Reverse T3 Thyroid Profile II (Comprehensive): Free thyroxine index (FTI or T7); T3 uptake (THBR); thyroid-stimulating hormone (TSH); thyroxine (T4), Total; tri-iodothyronine (T3), Total
Thyroxine Free, Direct (FT4) Tri-iodothyronine Free, Serum (FT3)
Estimated turnaround for results is 5 business days. If confirmation testing is required, the estimated time may be extended.
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 stop biotin consumption at least 72 hours prior to the collection of specimen.