Research Studies

This research study will compare sex hormone concentrations in healthy women to women with chronic kidney disease. We also measure blood vessel function using non-invasive testing. Participation will consist of one screening visit (approximately an hour) and one testing visit (approximately 3 hours of time or less). The testing visit will include non-invasive testing of blood vessel function. Testing takes place at the University of Colorado Anschutz Medical Campus.

This research study will compare sex hormone concentrations in healthy women to women with chronic kidney disease. We also measure blood vessel function using non-invasive testing. We are looking for: ? Women ? Aged 18-44 OR 55-75 years ? Generally healthy and free from hypertension OR Have Chronic kidney disease (CKD) ? Non-smokers ? Free from advanced CKD requiring chronic dialysis ? Women must not take an oral contraceptive or not use oral hormone replacement therapy ? Women must not be pregnant or trying to become pregnant

Main Procedures Involved: - Blood draw - Non-invasive vascular testing

Duration of Participation: Participation will consist of one screening visit (approximately an hour) and one testing visit (approximately 3 hours of time or less).