 [ Symptoms ] if you spend more then 10 of you total income earned towards your health insurance are you entitled towards subsidies [ Disease ] well those lab results are a little high keyword little they are not off the charts by any means the normal reference range for bun blood urea nitrogen is 7 20 mgdl and the range for serum blood creatinine for a male is 0 7   1 4 mgdl so you can see yours are higher than normal but only your health care provider can interpret these results relative to your medical history that is the key point here these results may be not good for one person but ok for another keep in mind dehydration can cause bun to rise so it is possible that is the only thing that is going on here both bun and creatinine measure kidney function by the way your health care provider should have more information for you at your follow up appointment if your situation were dire your provider would have called you immediately with instructions on what to do hope this helps