It is carried out through the bloodstream to the kidneys. Healthy kidneys filter creatinine out of the blood and it is excreted in the urine. Measurement of creatinine in blood or urine provides clues on how well the kidneys are working. An increase in 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.
For adult men, it is 0.74 to 1.35 mg/dL (65.4 to 119.3 micromoles/L).
For adult women, it is 0.59 to 1.04 mg/dL (52.2 to 91.9 micromoles/L).
Possible causes of a higher creatinine level include:
- Kidney damage or kidney failure
- KIdney infection
- Reduced blood flow to the kidneys
- Dehydration
Low creatinine levels can be caused by:
- Muscle diseases, such as muscular dystrophy wherein there is muscle weakness, muscle stiffness and pain, and inturn decreased mobility.
- A liver disease. Poor liver function interferes with creatine production, which can cause low creatinine. Symptoms include jaundice, abdominal pain and swelling, and pale, bloody, or tar-colored stools.
- Excess water loss. Pregnancy, and certain medications can temporarily cause this.
Abnormal creatinine levels may be a sign of underlying kidney disease/conditions, which may contribute to decreased kidney function like:
- diabetes
- high blood pressure
- thyroid disease
- autoimmune diseases
- bacterial infection of the kidneys
- a blocked urinary tract
- a family history of kidney disease
- Avoid supplements containing creatine, particularly athletes who take oral supplements must watch their intake.
- Reduce your protein intake. In particular, cooked red meat can affect creatinine. Switching to more vegetable-based dishes can help to balance.
- Eating more dietary fibres has effects on creatinine levels.
- Dehydration could raise creatinine. So, increasing the intake of fluid helps.
- Lower your salt intake.
- Avoid overusing non-steroidal anti-inflammatory drugs like Aspirin, Ibuprofen etc.
- Limit alcohol/smoking.
Author
MRCP (UK), MBBS (Lond.), Chief Medical Officer of Bowtie
Mr. Jacky Lio plays a crucial role in driving collaborative partnerships with healthcare providers and setting the vision for Bowtie's customer health experiences.
He is trained in the UK as a Specialist in Acute Medicine and with over 10 years of service in the NHS. He believes in the universal need for basic healthcare protection.
The above content is provided by the 廖永熙 Jacky Lio team. The information is for reference only and cannot replace any personal advice given by qualified medical professionals.