A value that isn't in the normal range may still be normal for you. Your doctor will also look at your results based on your age, health, and other factors. Your lab report should show the range that your lab uses for each test. A BUN-to-creatinine ratio can help your doctor check for problems, such as dehydration, that may cause abnormal BUN and creatinine levels.Įach lab has a different range for what's normal. Blood urea nitrogen (BUN) and creatinine tests can be used together to find the BUN-to-creatinine ratio (BUN:creatinine). 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. They’re usually not any cause for concern.A blood urea nitrogen (BUN) test measures the amount of nitrogen in your blood that comes from the waste product urea. It’s uncommon to have low levels of creatinine, but this can occur as a result of certain conditions that cause decreased muscle mass. Also, a person receiving dialysis will have lower levels after a treatment. If it was temporarily or falsely elevated due to dehydration, a very high-protein diet, or supplement usage, then reversal of those conditions will lower the level. If your creatinine is truly elevated and it’s from an acute or chronic kidney injury, the level won’t decrease until the problem is resolved. reduced blood flow to the kidneys due to shock, congestive heart failure, or complications of diabetes.kidney problems, such as kidney damage or infection.Your serum creatinine levels may be slightly elevated or higher than normal due to: High serum creatinine levels in the blood indicate that the kidneys aren’t functioning properly. Normal levels are roughly the same for people over 60. In general, however, normal creatinine levels range from 0.9 to 1.3 mg/dL in men and 0.6 to 1.1 mg/dL in women who are 18 to 60 years old. Results may also vary depending on age and gender. People who are more muscular tend to have higher creatinine levels. What do my creatinine blood test results mean?Ĭreatinine is measured in milligrams per deciliter of blood (mg/dL). Your doctor will give you the results within a few days of testing. Once enough blood is drawn, the sample is sent to a laboratory for analysis. soreness or redness at the puncture site.However, there are some minor risks, including: After the healthcare provider removes the needle, they put a bandage over the puncture wound.Ī creatinine blood test is a low-risk procedure. You might feel a slight prick when the needle is inserted, but the test itself isn’t painful. In most cases, a vein on the inside of the elbow is used. Once they find a vein, they insert a needle into it to collect the blood. This makes the veins swell with blood, allowing them to find a vein more easily. They sterilize the injection site with an antiseptic and then tie a band around your arm. The creatinine blood test is a simple test that requires the removal of a small sample of blood.Ī healthcare provider first asks you to pull up your sleeves so that your arm is exposed. What can I expect during a creatinine blood test? If you’re taking this type of medication, your doctor may order regular creatinine blood tests to make sure your kidneys remain healthy. streptococcal infections, such as poststreptococcal glomerulonephritisĪminoglycoside medications, such as gentamicin (Garamycin, Gentasol), can also cause kidney damage in some people.the death of kidney cells as a result of drug abuse.decreased blood flow to the kidneys, which may be caused by congestive heart failure, diabetes, or dehydration.blockage of the urinary tract, which may be due to kidney stones.prostate disease, such as an enlarged prostate.pyelonephritis, which is a bacterial infection of the kidneys.glomerulonephritis, which is an inflammation of the glomeruli due to damage.Kidney problems can be related to different diseases or conditions, including: swelling in the face, wrists, ankles, or abdomen.Your doctor may order a creatinine blood test to assess your creatinine levels if you show signs of kidney disease.
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