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Thyroid Function Test Interpretation Table

TSH, Free T4, Free T3 and Associated Condition
#Diagnosis #Endocrinology #Hyperthyroid #Hypothyroid #Function
Thyroid Function ... Interpretation Table TSH ... T3 and Associated ... #Hypothyroid #Function ... Comparison #Table #TSH
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
of Patients for Thyroid ... ; in some cases, ... procedure that ablates thyroid ... disease course #hypothyroid ... #hyperthyroid #
Abnormal Serum TSH - Differential Diagnosis Algorithm
Increased TSH
 • Hypothyroidism
 • Sub-clinical Hypothyroidism
 • Recovery from
Differential Diagnosis Algorithm ... Recovery from Non-Thyroid ... Thyrotoxicosis • Non-Thyroid ... Thyrotoxicosis • T3 ... #Hypothyroid #Hyperthyroid
Thyroid Function Tests (TFTs) and Interpretation

 • TSH, Free T4, Free T3
 • T3 Uptake
 •
Thyroid Function ... Interpretation • TSH ... , Free T4, Free ... @DharSaty #Thyroid ... #Function #Tests
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Approach to Thyroid ... Function Tests ... symmetrically enlarged thyroid ... , high T4 +/- T3 ... Hyperthyroidism #algorithm
Approach to the Diagnosis of Hyperthyroidism - Differential Diagnosis and Workup Algorithm

 • Secondary Hyperthyroidism (↑↔TSH,
, ↑Total T3/Free ... , ↔Total T3/Free ... , ↑Total T3/Free ... , ↔Total T3/Free ... • Exogenous thyroid
Hyperthyroidism Overview

Clinical Manifestation of Hyperthyroidism:
 • Fatigue
 • Weight loss
 • Heat intolerance
 • Depression, nervousness
• ↑ Total T3 ... • ↑ Free T4 • ... ↑ FT4 and/or ↑ T3 ... : Reduce T4 -> T3 ... hyperthyroidism #causes
Hyperthyroidism (low TSH, High T4/T3) - Diagnostic Algorithm

Radioactive iodine scan – get if concern for nodular
Hyperthyroidism (low TSH ... , High T4/T3) - ... Diagnostic Algorithm ... concern for nodular thyroid ... Hyperthyroidism #Hyperthyroid
Emergencies related to thyroid gland diseases are infrequently observed in the clinical practice. They are caused
They are caused ... in 1850 and the cause ... Both hypothyroid ... coma (HC) and thyrotoxic ... @DharSaty #Coma
Subacute Thyroiditis

Also known as: de Quervain’s thyroiditis, granulomatous thyroiditis, or viral thyroiditis

What?
Postviral inflammatory process caused by
inflammatory process caused ... after onset Causes ... phase: ↑ T4 and T3 ... levels, ↓ TSH ... (2) Hypothyroid