Relationship Between Genes Important in Blood Pressure Regulation and Blood Pressure Therapy in Hypertension

Inclusion Criteria: 1. Subject is able and willing to provide informed consent 2. Subject is ≥ 30 and ≤ 70 years of age 3. Subject with diagnosis of Hypertension for a minimum of 1 year 4. Subject has been on the same class/classes of blood pressure medication for a minimum of 6 months. Note: A change in dosage, frequency, or specific medication is acceptable as long as there have been no changes to the class/classes of medications prescribed. 5. Subject with a Body Mass Index (BMI) ≥ 19 and ≤ 35 6. Subject is currently prescribed and taking one of the following classes of medications alone or in combination with each other or a Ca+ channel blocker. * Diuretics * ACE Inhibitors * Angiotensin Receptor Blocker (ARB) * Beta-blockers Exclusion Criteria: 1. Subject has clinically significant kidney disease as determined by the investigator. 2. Subject has clinically significant cardiac disease as determined by the investigator. 3. Subject has clinically significant vascular disease as determined by the investigator. 4. Subject has a diagnosis of secondary hypertension or is experiencing a complication of pregnancy. 5. Subject is currently prescribed and taking any additional class of medication(s) for high blood pressure not included in the list above, with the exception of a Ca+ channel blocker. 6. Subject has Systolic BP \> 190 or Diastolic BP \> 120 documented within the six months prior to visit. 7. Subject has a regular alcohol intake of greater than 21 units per week in the past 6 months 8. Subject has smoked greater than two packs of cigarettes (total) or equivalent nicotine intake in the past 6 months. 9. Subject has an anticipated survival less than 12 months. 10. Any other reason that the subject is inappropriate for study enrollment in the opinion of the Investigator.