The laboratory test of choice to confirm myxoedema coma is -
Laboratory studies are impoant to confirm the diagnosis of myxedema coma. However, if the condition is suspected, treatment should be staed immediately without waiting for the results. Thyroid function tests TSH is elevated in most patients indicating a primary thyroid disorder Free T4 and free T3 levels are low A low or normal TSH level with low levels of free T4 and free T3 may indicate that the disorder is due to pituitary or hypothalamic dysfunction Ref - medscape.com
Thyroid stimulating hormone (TSH)
Thyrotropine releasing hormone (TRH)
Tri-iodothyronine (T3)
Tetra iodothyronine (T4)
Endocrinology