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Thyroid Function Test Interpretation Table

TSH, Free T4, Free T3 and Associated Condition
#Diagnosis #Endocrinology #Hyperthyroid #Hypothyroid #Function
Thyroid Function ... Test Interpretation ... Table TSH, Free ... Condition #Diagnosis #Endocrinology ... #Hypothyroid #Function
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Approach to Thyroid ... Function Tests ... #algorithm #diagnosis ... #endocrinology ... #TFTs #TSH #Interpretation
Thyroid Function Tests (TFTs) and Interpretation

 • TSH, Free T4, Free T3
 • T3 Uptake
 •
Thyroid Function ... • TSH, Free ... @DharSaty #Thyroid ... #Function #Tests ... #endocrinology
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
Disease Hyperthyroidism ... ; in some cases, ... - TSH high; free ... - TSH high; free ... differential #diagnosis #endocrinology
Hyperthyroidism - Differential Diagnosis Algorithm
High/Normal Radioiodine Uptake
 - Autoimmune Thyroid Disease:
    • Grave's
Hyperthyroidism ... Differential Diagnosis Algorithm ... Struma Ovarii #Hyperthyroidism ... #endocrinology ... #causes
Approach to the Diagnosis of Hyperthyroidism - Differential Diagnosis and Workup Algorithm

 • Secondary Hyperthyroidism (↑↔TSH,
Diagnosis and Workup Algorithm ... (↑↔TSH, ↑Total ... • Exogenous thyroid ... Differential #Diagnosis #Algorithm ... #endocrinology
Hyperthyroidism Overview

Clinical Manifestation of Hyperthyroidism:
 • Fatigue
 • Weight loss
 • Heat intolerance
 • Depression, nervousness
Diagnosis: • ↓ Low TSH ... Total T3 • ↑ Free ... • Labs: - ↓ TSH ... #causes #diagnosis ... #differential #endocrinology
Amenorrhea - Differential Diagnosis Algorithm
Elevated FSH
 • Premature Ovarian Failure
 • Menopa use
 • Spontaneous
Bleed With
Elevated FSH ... • Hyperthyroidism ... Challenge • Functional ... #endocrinology ... #causes
Hypothyroidism - Differential Diagnosis Algorithm
Central Hypothyroidism
 • Isolated TSH Deficiency
 • Panhypopituitarism
Thyroid Hormone Resistance
Iatrogenic
Primary Hypothyroidism
 -
Differential Diagnosis Algorithm ... • Isolated TSH ... Panhypopituitarism Thyroid ... #endocrinology ... #causes