I have never had a critical low, but I have had low BUN test results. For me, it is because I suffer from chronic dehydration in association to one of my other conditions.

I just got results of low BUN and low creatinine, which indicate an issue with the liver. My kidney and bladder ultrasound showed swelling in a kidney, so I'm having a CT scan tomorrow and hoping that will show the liver and pancreas as well.

I know ot jas something to do with your liver and kidneys

Yes but I forgot what it means

I have had so many test that they are all confusing numbers to me and i was told the last ones were abnormal numbers positive lupus but then some one else reads them different but still saying abnormal and all my test have come back a positive number it's hard to find a good doctor and rhuematologist the one i had was so confusing and did not help i am not going back to him will find another opinion so the test are very confusing for lupus and even if you have all the symptoms they still aren't sure of any thing i am in oregon and looking but like i said hard to find !!!!