135 results
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
multinodular goiter - TSH ... Toxic adenoma - TSH ... thyroiditis - TSH ... thyroiditis - TSH ... thyroiditis - TSH
Abnormal Serum TSH - Differential Diagnosis Algorithm
Increased TSH
 • Hypothyroidism
 • Sub-clinical Hypothyroidism
 • Recovery from
Abnormal Serum TSH ... Algorithm Increased TSH ... Illness Decreased TSH ... Toxicosis #TSH
Algorithmic Approach to Hypothyroidism - Differential Diagnosis and Management Framework

Central Hypothyroidism (Secondary or tertiary) ↓TSH, ↓FT4
or tertiary) ↓TSH ... Hypothyroidism ↑TSH ... Hypothyroidism ↑TSH ... FT4 • Recheck TSH ... sick syndrome ↔TSH
Thyroid Function Test Interpretation Table

TSH, Free T4, Free T3 and Associated Condition
#Diagnosis #Endocrinology #Hyperthyroid #Hypothyroid #Function
Interpretation Table TSH ... Comparison #Table #TSH
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Hyperthyroidism • Low TSH ... • Low TSH, normal ... • Low TSH, high ... High or normal TSH ... endocrinology #TFTs #TSH
Graves Hyperthyroidism - Diagnosis and Management Algorithm
Low TSH -> TSH-R-Ab+ -> Graves' Hyperthyroidism

doi: 10.1210/clinem/dgaa646

#Graves #Disease #Hyperthyroidism
Algorithm Low TSH ... -> TSH-R-Ab+ ->
Breast Discharge - Differential Diagnosis Algorithm
High Prolactin + Normal TSH
 • Microprolactinoma
 • Steroid Hormone Intake
Prolactin + Normal TSH ... + Normal/ Low TSH ... Prolactin + High TSH
Hyperthyroidism - Differential Diagnosis Algorithm
High/Normal Radioiodine Uptake
 - Autoimmune Thyroid Disease:
    • Grave's
Positive anti-TSH ... Multinodular Goiter - TSH ... Excess: • TSH-Secreting
Approach to the Diagnosis of Hyperthyroidism - Differential Diagnosis and Workup Algorithm

 • Secondary Hyperthyroidism (↑↔TSH,
Hyperthyroidism (↑↔TSH ... Hyperthyroidism (↓TSH ... Hyperthyroidism (↓TSH ... Hyperthyroidism unlikely (↔TSH
Diagnosis of Primary Amenorrhea
A diagnostic approach to primary amenorrhea. (FSH = follicle-stimulating hormone; LH = luteinizing
(FSH = follicle-stimulating ... luteinizing hormone; TSH