Creatinine in the blood

🩸 Creatinine blood test This test measures the level of creatinine in the blood, which is a product of muscle breakdown in the body, and it is eliminated through the kidneys. Elevated creatinine often means the kidneys are not functioning efficiently enough, while low levels are usually due to a deficiency in muscle mass or malnutrition. 🩺 Why does the doctor request the test? To monitor kidney function, or before taking medications that may affect the kidneys, or when symptoms such as swelling, fatigue, or decreased urination are present. 💡 Advice: It is preferable to do the test while fasting for 6 to 8 hours, and it is recommended to drink enough water before the test, because dehydration can temporarily raise the level.