It is a metabolic waste product resulting from the wear and tear of muscles in the human body. It is filtered by the kidneys and excreted from the body through urine. Its concentration in the blood varies depending on a person’s age, gender, and muscle mass. For this reason, levels in men may be higher than in women.
Creatinine is generally produced in the muscles of the body. Because its production is linked to muscle mass, creatinine levels tend to be higher in individuals with a high muscle mass. Low levels, on the other hand, are more commonly seen in the elderly, underweight individuals, and people with low muscle mass.
What Does a High Creatinine Level Mean?
Creatinine levels vary depending on a person’s age, gender, and muscle mass, and in some cases, these levels may rise. Kidney damage, impaired kidney function, or insufficient filtration of waste products can lead to an increase in blood creatinine levels. Individuals with elevated creatinine levels identified through testing are often found to have kidney problems. He may experience symptoms such as fatigue and loss of appetite. When the kidneys fail to function properly, they cannot excrete water, causing it to accumulate in the body. This leads to swelling in certain areas of the body. Elevated creatinine levels may indicate a disease. Patients can seek treatment by consulting a nephrologist or an internist
. The symptoms and causes related to this condition are as follows:
Kidney Infection: Also known as pyelonephritis. It is a type of urinary tract infection. It occurs when viruses and bacteria cause the infection. Symptoms such as fever, a burning sensation and odor in the urine, nausea, vomiting, pain in the back and sides, groin pain, and bloody urine are considered sufficient to raise suspicion of pyelonephritis.
Diabetes: Diabetes causes many problems and can also lead to kidney issues. There are two types of diabetes, both of which commonly cause symptoms such as frequent urination, fatigue, increased appetite, and numbness in the hands and feet.
High Blood Pressure: High blood pressure can damage the blood vessels surrounding the kidneys and impair their function, potentially leading to an increase in blood pressure levels throughout the body.
Heart Diseases: Certain heart and vascular diseases can also lead to kidney problems. Impaired blood flow to the kidneys can cause damage over time. Arteriosclerosis usually does not occur unless there are significant blockages. However, in some cases, it can cause symptoms such as chest pain, shortness of breath, fatigue, and sometimes difficulty speaking. In heart failure, symptoms may include difficulty breathing or shortness of breath, fatigue, and swelling in the feet and legs.
Urinary Tract Obstruction: The urinary tract can become obstructed due to various causes, such as an enlarged prostate, kidney stones, or tumors. In such cases, urine may accumulate in the kidneys. An increase in the concentration of substances in the urine leads to urinary tract obstruction. Symptoms include fatigue, back pain, blood in the urine, and pain.
Kidney Failure: Elevated levels are most commonly observed here. Symptoms may include fatigue, nausea, loss of consciousness, headache, insomnia, and muscle cramps.
What Is Low Creatinine?
Low creatinine levels are determined through tests, just as high levels are. Symptoms vary depending on the cause of the low levels. The causes and symptoms can be listed as follows:
Low Muscle Mass: Since muscles directly affect the body’s creatinine levels, individuals with low muscle mass tend to have lower levels. A decrease in muscle mass—which varies by gender and age—can lead to a drop in creatinine levels. An irregular or inadequate diet can also affect muscle mass. For this reason, it is important to maintain a healthy and balanced diet. A decrease in this value may also occur in serious and potentially dangerous muscle diseases. Symptoms include muscle pain, stiffness, weakness, and atrophy.
Weight Loss: Individuals experiencing excessive weight loss also experience a reduction in muscle mass. In such cases, creatinine levels may be low.
Pregnancy: During pregnancy, blood flow to the kidneys increases. This leads to an increase in the level of creatinine excreted by the body.
What Is the Normal Creatinine Level?
It is directly related to the muscles in the body. The level in the blood indicates a person’s muscle mass and kidney function. In adult men with normal kidney function, the level is approximately 0.7–1.3 milligrams, and for women, it ranges from 0.6 to 1.1 milligrams. The lower level in women is related to their lower muscle mass.
Creatinine Test
Tests can detect whether creatinine levels in the body are high or low. This test, performed using blood and urine samples, also determines the condition of the kidneys and how well they are functioning.
Low and High Creatinine Levels in Urine
Treatment must be tailored to the factors causing low or high levels in urine. Tests using samples taken from urine or blood determine the level of creatinine in the body. These levels reveal the individual’s kidney health. When high levels are observed due to kidney-related issues, a treatment method is applied. In cases of low levels, he should increase his muscle mass and maintain a healthy, balanced diet.
