What do the results mean?In general, high levels of creatinine in blood and low levels in urine indicate kidney disease or another condition that affects kidney function. These include:Autoimmune diseasesBacterial infection of the kidneysBlocked urinary tractHeart failureComplications of diabetesBut abnormal results don't always mean kidney disease. The following conditions can temporarily raise creatinine levels:PregnancyIntense exerciseA diet high in red meatCertain medicines. Some medicines have side effects that raise creatinine levels.If you have questions about your results, talk to your health care provider.Learn more about laboratory tests, reference ranges, and understanding results.
