Thyroid adenoma laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ammu Susheela, M.D. [2]

Laboratory Findings

• Laboratory findings consistent with the diagnosis of multiple endocrine neoplasia type 2 are tabulated below.

Laboratory findings

Test	Findings
Metabolic	Thyroid stimulating hormone Antithyroid antibodies Elevated calcitonin Decreased calcium
Adapted from Arzu Tatlıpınar1 and İlkay Kartal [Updated 2015]. In: Arzu Tatlıpınar1 and İlkay Kartal et al., Available from: http://www.omicsgroup.org/journals/the-evaluation-of-thyroid-nodules-2167-7948-1000181.pdf

Laboratory tests Normal Range Abnormal value Serum Thyroid stimulating hormone 0.4 - 4.0 milli-international units per liter <0.4 or >4.0 Antithyroid antibodies <35 IU/mL >35 IU/mL Serum calcitonin less than 10pg/mL >=100 pg/mL                           A patient with thyroid nodule                                                                                                                                                               Normal TSH               Low TSH                                                                                                                                   <1cm suspicious nodule     >1cm nodule           Thyroid nuclear scan                                                                                                                                                               US guided FNAC classical     FNAC       Hot nodule       Cold nodule                                                                                                                                                 FNAC                       References