7 results
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
Disease Hyperthyroidism ... high; in some cases ... ; T3 low; rT3 high ... disease course #hypothyroid ... #hyperthyroid #
Abnormal Serum TSH - Differential Diagnosis Algorithm
Increased TSH
 • Hypothyroidism
 • Sub-clinical Hypothyroidism
 • Recovery from
Abnormal Serum TSH ... Differential Diagnosis Algorithm ... Recovery from Non-Thyroid ... Thyrotoxicosis • T3 ... #Hypothyroid #Hyperthyroid
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Approach to Thyroid ... • Low TSH, Low ... • Low TSH, normal ... symmetrically enlarged thyroid ... #algorithm #diagnosis
Hyperthyroidism (low TSH, High T4/T3) - Diagnostic Algorithm

Radioactive iodine scan – get if concern for nodular
Hyperthyroidism ... (low TSH, High T4 ... /T3) - Diagnostic ... concern for nodular thyroid ... #Hyperthyroid #
Hyperthyroidism Overview

Clinical Manifestation of Hyperthyroidism:
 • Fatigue
 • Weight loss
 • Heat intolerance
 • Depression, nervousness
goiter • Toxic diffuse ... Diagnosis: • ↓ Low ... TSH • ↑ Total T3 ... ↑ FT4 and/or ↑ T3 ... #causes #diagnosis
Hyperthyroidism - Differential Diagnosis Algorithm
High/Normal Radioiodine Uptake
 - Autoimmune Thyroid Disease:
    • Grave's
Hyperthyroidism ... Differential Diagnosis Algorithm ... High/Normal Radioiodine ... Trophoblastic Neoplasm Low ... endocrinology #causes
Subacute Thyroiditis

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

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