Thyroid Dysfunction in Patients with Metabolic Syndrome: A Cross-Sectional, Epidemiological, Pan-India Study

Table 1

Definitions for different grades of thyroid dysfunction.

Parameters	Hyperthyroidism		Hypothyroidism
	Overt	Subclinical	Overt	Subclinical
TSH (μIU/mL)	<0.45	<0.45	>4.50	>4.50
FT4 (ng/dL)	>1.8	0.8-1.8	<0.8	0.8-1.8
FT3 (pg/mL)	>4.4	1.4-4.4	<1.4	1.4-4.4

TSH: thyroid-stimulating hormone; FT4: free thyroxine; FT3: free triiodothyronine.