What would lupus do to my kidneys?

It depends: It depends on the duration of the lupus until diagnosis and how good the monitoring for complications and treatment is. The range could go from simple biochemical abnormalities with no clinical significance to renal failure and need for dyalisis.

Kidney disease: Lupus can affect kidneys in several ways. Patients with lupus should have the following tests to detect early kidney disease 1.serum creatinine 2.urinalysis for blood and protein 3.urine protein/creatinine ratio