@sue85 Welcome to Mayo Clinic Connect. Have you asked the nurse why she didn't feel concerned? That might be an interesting answer!

Typically we look at trends in kidney function, not just a single result. Possible causes of a radically different result could be: dehydration, change/interactions in medications, a recent or current infection you are dealing with. Can you request a repeat test to see what the results are?

As someone with both active multiple myeloma, and end-stage kidney disease [not related to the myeloma!] watching trends is important to me. I hope you are able to get the answers you need. Please let me know if you have any questions?
Ginger