![]() ![]() The level of creatinine in your blood also tells how well your kidneys are working-a high creatinine level may mean your kidneys are not working properly. Blood urea nitrogen to creatinine ratio (BUN:creatinine)Ī BUN test may be done with a blood creatinine test. A low BUN level can occur normally in the second or third trimester of pregnancy. Liver disease or damage can lower your BUN level. Heart failure, dehydration, or a diet high in protein can also make your BUN level higher. If your kidneys are not able to remove urea from the blood normally, your BUN level rises. Urea is made in the liver and passed out of your body in the urine.Ī BUN test is done to see how well your kidneys are working. Urea is made when protein is broken down in your body. Weight loss can improve the health of your kidneys and lower creatinine levels.A blood urea nitrogen (BUN) test measures the amount of nitrogen in your blood that comes from the waste product urea. Lose some weight if you are overweight.Fiber from fruits and vegetables improves kidney health and can lower blood creatinine levels. Avoid creatine and creatine-based supplements.Increase physical activity (unless not recommended due to an existing medical condition): Exercise increases creatinine levels and helps build muscle.A high BMI can cause kidney dysfunction and increase BUN (urea) levels. Alcohol blocks the production of urea (BUN) If this is the case, try increasing your intake of high-protein foods like lean meats and beans. Low BUN levels may mean you’re not getting enough protein. Key: ↑ = increase, ↓ = decrease, → = no change. Patients with a muscular body develop renal failure.īlood urea nitrogen/Creatinine ratio causesĮxtrarenal Factors Affecting BUN and sCr : Factor by mechanismĬatabolic states (fever, steroids, burns, etc.).Drugs like phenacemide therapy (Will increase the conversion of creatine to creatinine).Rhabdomyolysis (There is the release of muscle creatinine).Any etiology leading to decreased synthesis of urea.ĭecreased Ratio Prerenal azotemia is superimposed on renal disease.ĭecreased Ration Postrenal azotemia where BUN rises without any ratio to creatinine increase. Increased ratio = >10:1 with raised creatinine level is seen in: Certain drugs like tetracycline and glucosteroids.Prerenal azotemia, where BUN rises without the increase in creatinine, is due to decreased GFR and is seen in: Increased ratio >10:1 while creatinine is normal: ![]() This is suggestive of renal diseases like:.R atio is maintained when BUN and creatinine are raised: Serum BUN (mg/dl) / Creatinine (mg/dl) Normal Values BUN/creatinine ratio : To assess the health of your kidneys to help diagnose kidney disease to monitor the effectiveness of dialysis and other treatments related to kidney disease or damage When to get tested?Īs part of a routine basic or comprehensive metabolic panel (CMP or BMP) during a health exam when you have signs and symptoms that may be due to kidney disease or have a condition that may be caused or worsened by kidney dysfunction at regular intervals when you are being treated for kidney disease or damage Sample required? SIADH (syndrome of inappropriate antidiuretic hormone) Increased ratio = >10:1 with raised creatinine level is seen in:.Increased ratio >10:1 while creatinine is normal:.Ratio is maintained when BUN and creatinine are raised:. ![]()
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