12 results
Thyroid Function Test Interpretation Table

TSH, Free T4, Free T3 and Associated Condition
#Diagnosis #Endocrinology #Hyperthyroid #Hypothyroid #Function
Thyroid Function ... Free T4, Free T3 ... Condition #Diagnosis #Endocrinology ... #Hyperthyroid # ... Hypothyroid #Function
Abnormal Serum TSH - Differential Diagnosis Algorithm
Increased TSH
 • Hypothyroidism
 • Sub-clinical Hypothyroidism
 • Recovery from
Differential Diagnosis Algorithm ... Thyrotoxicosis • T3 ... Differential #Diagnosis #Algorithm ... #Hypothyroid #Hyperthyroid ... #Endocrinology
Hyperthyroidism (low TSH, High T4/T3) - Diagnostic Algorithm

Radioactive iodine scan – get if concern for nodular
low TSH, High T4/T3 ... ) - Diagnostic Algorithm ... Hyperthyroidism #Hyperthyroid ... #Diagnosis #Algorithm ... #Workup #Endocrinology
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
high; in some cases ... , T3 is elevated ... disease course #hypothyroid ... #hyperthyroid # ... differential #diagnosis #endocrinology
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Approach to Thyroid Function ... normal T4 +/- T3 ... TSH, high T4 +/- T3 ... Hyperthyroidism #algorithm ... #diagnosis #endocrinology
Hypercalcemia - Differential Diagnosis Algorithm
Elevated PTH (High or normal):
 • Primary Hyperparathyroidism
 • Familial Hypocalciuric Hypercalcemia
Low
Differential Diagnosis Algorithm ... Bone Resorption: Hyperthyroid ... Differential #Diagnosis #Algorithm ... #causes #endocrinology
Amenorrhea - Differential Diagnosis Algorithm
Elevated FSH
 • Premature Ovarian Failure
 • Menopa use
 • Spontaneous
Bleed With
Differential Diagnosis Algorithm ... Hyperprolactinemia Organic Cause ... Challenge • Functional ... #endocrinology ... #causes
Hyperphosphatemia - Differential Diagnosis Algorithm
Transcellular Shift:
 • Rhabdomyolysis
 • Tumor Lysis
 • Metabolic or Respiratory Acidosis
Differential Diagnosis Algorithm ... Impaired Renal Function ... Differential #Diagnosis #Algorithm ... #endocrinology ... #causes
Adrenal Insufficiency Diagnosis Algorithm - Evaluation of HPA Axis Response to ACTH

Early am cortisol < 3
Insufficiency Diagnosis Algorithm ... unclear (often the case ... normal adrenal function ... Insufficiency #Diagnosis #Algorithm ... Stimulation #Test #Endocrinology
Weight Gain / Obesity  - Differential Diagnosis Algorithm
Decreased Expenditure:
 • Sedentary Lifestyle
 • Smoking Cessation
Differential Diagnosis Algorithm ... Ovarian Syndrome • Hypothyroid ... Differential #Diagnosis #Algorithm ... #endocrinology ... #causes