Inclusion Criteria:

• * Male or female child/adolescent up to 18 years of age with CKD
• * estimated glomerular filtration rate (eGFR) of 30 to 90 ml/min/1.73 m2
• * diagnosed with hypertension and on a stable dose of anti-hypertensive medication(s) for at least 3 months
• * Non-dipping identified on ABPM

Exclusion Criteria:

• * history of organ transplantation, oncological disease, or dialysis
• * inability to complete 24-hour ABPM or 24-hour urine collection
• * Children less than 6 years of age will be excluded, as they often are unable to complete a successful ABPM study (≥ 40 readings, with 1 reading per hour of sleep)
• * Currently on diuretic medications.