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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 ... , Free T4, Free ... Endocrinology #Hyperthyroid ... #Hypothyroid #Function ... Comparison #Table #TSH
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
Graves disease - TSH ... low; free T4 high ... low; free T4 and ... disease course #hypothyroid ... #hyperthyroid #
Hyperthyroidism (low TSH, High T4/T3) - Diagnostic Algorithm

Radioactive iodine scan – get if concern for nodular
Hyperthyroidism (low TSH ... , High T4/T3) - ... affects diagnostic workup ... Hyperthyroidism #Hyperthyroid ... Diagnosis #Algorithm #Workup
Algorithm for the diagnostic workup of hyperthyroidism. (T3 = triiodothyronine; T4 = thyroxine; TSH = thyroid-stimulating
the diagnostic workup ... triiodothyronine; T4 ... = thyroxine; TSH ... algorithm #diagnosis #workup
Approach to the Diagnosis of Hyperthyroidism - Differential Diagnosis and Workup Algorithm

 • Secondary Hyperthyroidism (↑↔TSH,
Diagnosis and Workup ... Hyperthyroidism (↑↔TSH ... ↑Total T3/Free T4 ... ↔Total T3/Free T4 ... ↑Total T3/Free T4
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
, Low normal T4 ... T4 +/- T3 → Subclinical ... Hyperthyroidism: Work-up ... T4 +/- T3 → Primary ... , high T4 +/- T3
Chronic Diarrhea - Workup
Osmotic:
 • Consider food diary and trial avoiding certain foods or meds, Consider
Chronic Diarrhea - Workup ... A/P, Consider testing ... Hypermotility: • TSH ... , Consider testing ... Chronic #Diarrhea #Workup
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
Tuberculosis Testing ... Tuberculin skin testing ... microscopy • Testing ... #Tuberculosis #Testing ... #Diagnosis #Workup
Antenatal Visits - Testing and Schedule
At Every Visit:	
 • Gestational Age	
 • BP
 • Maternal Weight
Antenatal Visits - Testing ... Protein Blood Work ... • HIV • +/- TSH ... Glucose Tolerance Testing ... Well-being GBS Testing
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Rheumatology Workup ... - CCP antibody testing ... – to consider: TSH ... Arthritis #laboratory #workup ... #diagnosis #testing