Thyroxine Free (FT4)

Includes:
Thyroxine Free (FT4), Direct

Patient Instructions: 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.

00151SST