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Thyroid Function Test Interpretation Table

TSH, Free T4, Free T3 and Associated Condition
#Diagnosis #Endocrinology #Hyperthyroid #Hypothyroid #Function
Thyroid Function ... Table TSH, Free ... T4, Free T3 and ... #Hypothyroid #Function ... #Table #TSH #FreeT3
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
low; free T4 high ... low; free T4 and ... low; free T4 and ... low; free T4 and ... #hyperthyroid #
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Approach to Thyroid ... Function Tests ... normal T4 → Possibly ... symmetrically enlarged thyroid ... #algorithm #diagnosis
Thyroid Function Tests (TFTs) and Interpretation

 • TSH, Free T4, Free T3
 • T3 Uptake
 •
Thyroid Function ... Tests (TFTs) and ... Interpretation • TSH ... , Free T4, Free ... #Function #Tests
Approach to the Diagnosis of Hyperthyroidism - Differential Diagnosis and Workup Algorithm

 • Secondary Hyperthyroidism (↑↔TSH,
Diagnosis and Workup Algorithm ... T3/Free T4) • ... T3/Free T4) • ... T3/Free T4) • ... • Exogenous thyroid
Hyperthyroidism (low TSH, High T4/T3) - Diagnostic Algorithm

Radioactive iodine scan – get if concern for nodular
Hyperthyroidism ... (low TSH, High T4 ... concern for nodular thyroid ... Check pregnancy test ... #Hyperthyroid #
Pruritus - Generalized Differential Diagnosis Algorithm - Systemic and Primary Causes
== Primary Skin Lesions ==
Macules /
Pruritus - Generalized ... Mellitus Liver Function ... Tests/Enzymes: ... failure/uremia TSH ... & T4: • Hypothyroidism
Pruritus - No Primary Skin Lesion - Differential Diagnosis Algorithm

Blood Glucose:
 • Diabetes Mellitus
Liver Function Tests/Enzymes:
Mellitus Liver Function ... Tests/Enzymes: ... failure/uremia TSH ... & T4: • Hypothyroidism ... secondary #systemic #generalized