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In general, around 6 to 24 mg/dL (2.1 to 8.5 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. Infants have lower levels than other people do, and the range in children varies.
The amount of creatinine in your blood should be relatively stable. An increased level of creatinine may be a sign of poor kidney function. Serum creatinine is reported as milligrams of creatinine to a deciliter of blood (mg/dL) or micromoles of creatinine to a liter of blood (micromoles/L).
Mild to moderate elevation in liver enzymes often means there is some type of inflammation within the liver. This matters because if the inflammation continues unabated for long enough, you could develop scarring in the liver, known as fibrosis. Stages of fibrosis range from 0 to 4: Stage 0 means there is no scarring.
This test is commonly used to measure bilirubin levels in newborns with infant jaundice. Determine whether there might be blockage in your bile ducts, in either the liver or the gallbladder. Help detect liver disease, particularly hepatitis, or monitor its progression.
A normal blood sodium level is between 135 and 145 milliequivalents per liter (mEq/L). Hyponatremia occurs when the sodium in your blood falls below 135 mEq/L. Many possible conditions and lifestyle factors can lead to hyponatremia, including:
When your kidneys no longer work at a level that's necessary to keep you alive, you have end-stage renal disease. End-stage renal disease usually occurs when kidney function is less than 15% of typical kidney function.
High hemoglobin count occurs less commonly because: Your red blood cell production increases to make up for chronically low blood oxygen levels due to poor heart or lung function. Your bone marrow produces too many red blood cells.
A high uric acid level can be the result of the body making too much uric acid, not getting rid of enough of it or both. Causes of a high uric acid level in the blood include: Diuretics (water retention relievers) Drinking too much alcohol; Drinking too much soda or eating too much of foods that contain fructose, a type of sugar
Look for signs of serious disease, particularly scarring of the liver, called cirrhosis. Monitor possible side effects of medicines. Liver function tests check the levels of certain enzymes and proteins in your blood. Levels that are higher or lower than usual can mean liver problems.
This test can measure blood levels of sodium, potassium, cortisol and adrenocorticotropic hormone (ACTH). A blood test also can measure antibodies related to autoimmune Addison's disease. ACTH stimulation test.