Evaluating the Prevalence of Acute Hepatic Porphyria in Postural Tachycardia Syndrome

Conditions

• Postural Orthostatic Tachycardia Syndrome
• Acute Hepatic Porphyria

Interventions

• DIAGNOSTIC_TEST: Autonomic Function Testing
• DIAGNOSTIC_TEST: Genetic Testing
• DIAGNOSTIC_TEST: Urine Testing
• DIAGNOSTIC_TEST: Blood laboratory Testing

Sponsor

Vanderbilt University Medical Center