- Patients aged over 18 years with given consent, first positive Sars-Cov2 detection within the last three days - Patients with pre-existing chronic renal insufficiency in any degree of severity - Patients of both gender

- Patients aged over 18 years with given consent, first positive Sars-Cov2 detection within the last three days - Patients with pre-existing chronic renal insufficiency in any degree of severity - Patients of both gender