Do you think the benefits of performing a repeat kidney biopsy to assess histologic evidence of disease activity or chronic damage outweigh the risks in a patient with recently treated lupus nephritis and improving creatinine levels?  

In patients with lupus nephritis who have recently undergone treatment and are demonstrating improved creatinine levels, performing a repeat kidney biopsy is generally unnecessary. The risks associated with the procedure do not justify its benefits unless there is persistent or worsening proteinuria...