Monocytes in Subjects With Type 1 Diabetes and Chronic Kidney Disease

Inclusion Criteria: 1. T1D CKD subjects: 1. Adults, males or females diagnosed with T1D 2. Age 18-65 years 3. Diagnosed with CKD (eGFR 60-90 ml/min/1.73 m2) 4. Diagnosed with albuminuria (UACR 30-500 mg/g) 5. On insulin injections or pump 6. On CGM Based on baseline CGM metrics, the investigators will stratify subjects to 2 groups Group A (Lower TIR group): TIR\<60%, A1c 7.5-9.5 Group B (Higher TIR group): TIR\>70% A1c 5.0-7.0 2. Controls: T1D subjects without CKD 1. Adults, males or females diagnosed with T1D 2. Age 18-65 years 3. No CKD (eGFR \>90 ml/min/1.73 m2) 4. No albuminuria (UACR \<30 mg/g) 5. On insulin injections or pump 6. On CGM Based on baseline CGM metrics, the investigators will stratify subjects to 2 groups Group A (Lower TIR group): TIR\<60%, A1c 7.5-9.5 Group B (Higher TIR group): TIR\>70% A1c 5.0-7.0 Exclusion Criteria: 1. Hemoglobin \<9 2. On GLP-1 agonist or DPP4 inhibitor or sodium-glucose co-transporter-2 inhibitors use within 30 days 3. pregnancy or plans to become pregnant 4. On steroids 5. Diagnosed with cancer, immunosuppression/autoimmune conditions 6. Reported heavy alcohol use or recreational drug use 7. Any condition which jeopardizes patient safety or affects monocytes at physician's discretion