Patients will be eligible to take part in the study if they attend NHS Lothian inpatient or outpatient services and can be classified as being at increased risk of CVD. This will include, but is not limited to, the following subgroups:
1. CKD as defined by the Kidney Disease Outcome Quality Initiative (K/DOQI) classification
2. AKI as defined by the Kidney Disease Improving Global Outcomes (KDIGO) classification
3. Small vessel vasculitis
4. Kidney transplant recipient
5. Kidney donor We will also recruit a healthy control group from the community.
