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Thyroid Function Test Interpretation Table

TSH, Free T4, Free T3 and Associated Condition
#Diagnosis #Endocrinology #Hyperthyroid #Hypothyroid #Function
Interpretation Table TSH ... Endocrinology #Hyperthyroid ... #Hypothyroid #Function ... Comparison #Table #TSH
Abnormal Serum TSH - Differential Diagnosis Algorithm
Increased TSH
 • Hypothyroidism
 • Sub-clinical Hypothyroidism
 • Recovery from
Abnormal Serum TSH ... Algorithm Increased TSH ... Toxicosis #TSH ... Diagnosis #Algorithm #Hypothyroid ... #Hyperthyroid #
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
Graves disease - TSH ... Toxic adenoma - TSH ... thyroiditis - TSH ... disease course #hypothyroid ... #hyperthyroid #
Hyperthyroid States - Comparison Table - Laboratory Findings via RebelEM @srrezaie

#Diagnosis #Endocrinology #Hyperthyroid #States #Comparison #Table
Hyperthyroid States ... Endocrinology #Hyperthyroid ... Comparison #Table #TSH
Algorithmic Approach to Hypothyroidism - Differential Diagnosis and Management Framework

Central Hypothyroidism (Secondary or tertiary) ↓TSH, ↓FT4
or tertiary) ↓TSH ... Hypothyroidism ↑TSH ... Hypothyroidism ↑TSH ... sick syndrome ↔TSH ... endocrinology #hypothyroid
Thyroid Disorders - Differential Diagnosis Algorithm
Hypothyroidism:
 • Hasimoto’s
 • Radioactive Iodine 
 • Hypopituitarism
 • Iodine
Diagnosis #Algorithm #Hypothyroid ... #Hyperthyroid
Amiodarone Toxicity and Monitoring

Tremor Ataxia 
Ocular neuritis 
Corneal Microdeposits 
Bradycardia 
Pulmonary fibrosis 
Hepatotoxicity 
Blue-gray skin
Photosensitivity Hyperthyroid ... Hypothyroid
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Hyperthyroidism • Low TSH ... • Low TSH, normal ... • Low TSH, high ... Hyperthyroidism → Signs ... High or normal TSH
Graves’ Disease: Pathogenesis and Clinical Findings
B & T lymphocyte mediated autoimmunity attack TSH receptor -> Continuous
autoimmunity attack TSH ... the etiology Signs ... conjunctivitis - Decr TSH ... endocrinology #symptoms #signs
Primary Amenorrhea Differential Diagnosis Framework

Workup:
 • β-HCG, TSH and PRL
 • Breast Tanner Staging
 • FSH,
Workup: • β-HCG, TSH ... Tanner Staging • FSH