Laboratory Testing for Asymptomatic Turner Syndrome Patients

Introduction to Routine Testing

The American College of Medical Genetics recommends routine laboratory testing for asymptomatic 22-year-old females with Turner syndrome, including complete blood count, thyroid-stimulating hormone, calcium, magnesium, creatinine, lipid profile, glucose, and HbA1c 1, 2, 3

The European Society of Cardiology suggests that complete blood count and differential should be monitored to detect mild-moderate thrombocytopenia and cytopenias in Turner syndrome patients 1
Calcium and magnesium levels should be monitored, with special attention to pH-corrected ionized calcium, as recommended by the American Heart Association 1, 3
Creatinine levels should be assessed to evaluate renal function in Turner syndrome patients, according to the American College of Cardiology 1, 3
Lipid profiles should be monitored to assess cardiovascular risk in Turner syndrome patients, as suggested by the European Heart Journal 1, 3
Glucose and HbA1c levels should be screened to detect diabetes in Turner syndrome patients, recommended by the American Diabetes Association 1, 3

Thyroid-stimulating hormone levels should be monitored to screen for autoimmune thyroid disease in Turner syndrome patients, as recommended by the American Thyroid Association 1, 3
Parathyroid hormone levels should be monitored if calcium abnormalities are detected in Turner syndrome patients, according to the Endocrine Society 1

The European Heart Journal recommends that transthoracic echocardiography and cardiac MRI should be performed periodically based on risk stratification in Turner syndrome patients 2, 3
Aortic size index should be calculated to determine cardiovascular risk and frequency of imaging follow-up in Turner syndrome patients, as suggested by the American College of Cardiology 2, 3

For patients with low cardiovascular risk, laboratory tests should be performed every 2-3 years, as recommended by the European Society of Cardiology 2, 3
For patients with moderate cardiovascular risk, laboratory tests should be performed annually, according to the American Heart Association 2, 3
For patients with high cardiovascular risk, laboratory tests should be performed every 6-12 months, as suggested by the European Heart Journal 2, 3

Failing to adjust aortic measurements for body size when interpreting cardiovascular risk in Turner syndrome patients is a common pitfall, as noted by the American College of Cardiology 2, 3
Neglecting to monitor for diabetes and dyslipidemia, which have higher prevalence in Turner syndrome, is a common mistake, according to the American Diabetes Association 3
Using standard reference ranges without considering Turner-specific normative data is a common error, as noted by the Endocrine Society 4