Have you had a kidney transplant, or are you on equivalent immunosuppression (e.g. you have immune-mediated kidney disease?
Have you received B-cell depleting-therapies or on equivalent immunosuppression (e.g. rituximab)?
Are you CKD Stage 4 or 5, or on dialysis?
Kidney Charities Together have produced a useful guide on what you need to know if you think you might have COVID-19 and to make sure you get the right treatments quickly.