I am 81 years recently (1.5 months) ago started on Telmisartan 40 HCTZ 12.5 MG and metoprolol 12.5 mg OD. I was previously on Amlodipine 2.5 mg, Torsemide 5 mg and Metoprolol 25 mg. My recent blood tests reveal elevated BUN (26 mg), elevated blood urea 56 mg and elevated serum creatinine 1.3 . Is this a cause for concern? Should the medications be changed?

Dr. Sajeev KumarGeneral Physician33yrs exp

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In general, around 7 to 20 mg/dL (2.5 to 7.1 mmol/L) is considered normal. But normal ranges may vary, depending on the reference range used by the lab, and your age. Ask your doctor to explain your results. Urea nitrogen levels tend to increase with age.If your kidneys are not able to remove urea from the blood normally, your BUN level rises. Heart failure, dehydration, or a diet high in protein can also make your BUN level higher. Liver disease or damage can lower your BUN level. 

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