Open AccessDoes time of sampling or food intake alter thyroid function test?
Author(s) -
Shriraam Mahadevan,
Dhalapathy Sadacharan,
Subramanian Kannan,
Anita Suryanarayanan
Publication year - 2017
Publication title -
indian journal of endocrinology and metabolism
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.456
H-Index - 28
eISSN - 2230-9500
pISSN - 2230-8210
DOI - 10.4103/ijem.ijem_15_17
Subject(s) - medicine , thyroid function tests , thyroid function , test (biology) , thyroid , sampling (signal processing) , physiology , statistics , mathematics , computer science , biology , ecology , filter (signal processing) , computer vision
A common question from most patients or laboratories is whether blood sample for thyroid-stimulating hormone (TSH) and free T4 (fT4) needs to be collected in a fasting state and whether time of the day when sample is collected matters.