What does it mean when the oil light comes on?   The oil light in a car indicates a lack of oil pressure. Typically this means that your motor oil level is low. It can also indicate a leak--head gasket or a cracked engâ¦ine block are two of the most common sources.
The kidneys maintain the blood creatinine in a normal range. Creatinine has been found to be a fairly reliable indicator of kidney function. Elevated creatinine level signifies impaired kidney function or kidney disease. As the kidneys become impaired for any reason, the creatinine level in the blood will rise due to poor clearance of creatinine by the kidneys. Abnormally high levels of creatinine thus warn of possible malfunction or failure of the kidneys.
Creatinine is a chemical waste product that is released into the blood when muscles contract. When kidney function is normal, creatinine is filtered from the blood through the kidneys. When creatinine levels are high, it can be an indicator of kidney disease. For adults, dialysis is recommended when creatinine levels reach 10.0 mg/dL; for children, dialysis is recommended when levels reach 2.0 mg/dL. To find out what a personâs creatinine levels are, a doctor will order a blood test called serum creatinine to determine kidney function and use the number to calculate the glomerular filtration rate (GFR), which can determine the stage of chronic kidney disease.