Description
Why It’s Done:
The Creatinine Serum Test is typically performed to:
• Assess kidney function: Elevated creatinine levels can indicate that the kidneys are not effectively filtering waste from the blood, which can be a sign of kidney disease or kidney dysfunction.
• Monitor kidney conditions: It helps in the management of chronic kidney disease (CKD), acute kidney injury (AKI), and other conditions affecting kidney health, such as hypertension or diabetes.
• Evaluate glomerular filtration rate (GFR): Creatinine levels are used to calculate GFR, which is used to stage kidney disease.
• Monitor the effects of medications: Certain medications, such as those used in chemotherapy, may affect kidney function, and creatinine levels are monitored to assess potential side effects.
• Diagnose muscle-related conditions: Creatinine is a byproduct of muscle metabolism, so elevated creatinine can also be linked to muscle damage or conditions like rhabdomyolysis.
Common symptoms or conditions that may prompt this test include:
• Swelling (edema)
• Fatigue or weakness
• Difficulty urinating or changes in urine output
• Unexplained weight gain or loss
• High blood pressure
• Diabetes or hypertension
• Chronic kidney disease (CKD) or acute kidney injury (AKI)
Preparation:
• No fasting required: The Creatinine Serum Test does not require fasting, and the blood can be drawn at any time of the day.
• Hydration status: It is important to be properly hydrated before the test, as dehydration can affect creatinine levels. Avoid being overly dehydrated prior to the test.
• Medications: Inform your healthcare provider of any medications you are taking, as certain drugs (such as ACE inhibitors, diuretics, or NSAIDs) may affect creatinine levels.
• Muscle-related conditions: If you have a muscle injury or condition, it could influence creatinine levels, so it’s important to let your healthcare provider know.
• Exercise: Intense physical activity just before the test can elevate creatinine levels due to muscle breakdown, so moderate activity is recommended prior to testing
