What Results In An Elevated BUN Level With A Normal Serum Creatinine
Blood urine nitrogen (BUN) and creatinine are two common measures to assess patient’s kidney condition, and both high creatinine and high BUN can indicate severe kidney damage. While what can cause patient with kidney disease to have an elevated BUN level with a normal serum creatinine?
Why high BUN and creatinine levels can indicate severe kidney damage?
Our kidney has strong metabolic ability and compensation, and one kidney will be able to complete its work. So patient will not have high creatinine or BUN levels until more than half kidney function is damaged, and patient with high levels of them will be already in the late stage of kidney disease, which means severe damage.
What can cause high BUN and creatinine levels?
As we already know, high BUN and creatinine can be caused by severe kidney damage. But except for these factors, they can also be caused by many other factors.
Creatinine is the metabolic product of muscle. Except for creatinine which is compounded by our body muscles, creatinine may also be gotten from the meat we take. Thereby, if patient has taken much meat in his diet, or if patient has taken strenuous exercise, his creatinine level will rise.
As to the BUN level in our kidney, many other factors can also cause patient to have high level. For example, because urea nitrogen is the metabolic waste of protein, so if patient take much protein in his diet, his BUN level will rise rise, and if patient has severe dehydration, he will also have high BUN level.
What can result in an elevated BUN level with a normal serum creatinine?
Thereby, if patient with kidney disease has an elevated BUN level with a normal serum creatinine. It may means patient is still in the early stage of kidney disease, so his creatinine is normal, but his BUN level may be affected by other factors. Besides, this condition may also appear due to many other reasons.
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