Creatinine
Type:
Waste Product
Reflects kidney function.
Creatinine is a waste product formed from the breakdown of creatine, which is used by muscles for energy, and is filtered out of the blood by the kidneys
Primary Function:
Normal Values:
53 - 123 µmol/L
>123 µmol/L
Monitoring is primarily done through the glomerular filtration rate (eGFR), which is calculated based on age, sex, race, and serum creatinine levels.
Pathological Values:
Symptoms/Pathology in Deficiency:
Kidney disease, kidney failure
High creatinine levels can indicate kidney weakness, muscle injuries, or inflammation. Levels may also rise after sports, seizures, or muscle injections.
Symptoms/Pathology in Increase:
