Creatinine; other source
CPT4 code
Name of the Procedure:
Creatinine Test; Serum Creatinine, Blood Creatinine Test
Summary
A creatinine test measures the level of creatinine in your blood. Creatinine is a waste product that your muscles produce at a constant rate, and it is filtered out by your kidneys. This test helps determine how well your kidneys are functioning.
Purpose
The creatinine test is primarily used to assess kidney function. It helps diagnose and monitor conditions that affect the kidneys, such as chronic kidney disease or acute kidney injury. It is also used to monitor the effects of certain medications on the kidneys.
Indications
- Symptoms such as swelling, fatigue, or high blood pressure that suggest kidney issues.
- Diagnosed kidney conditions requiring monitoring.
- Monitoring the effects of drugs that might affect kidney function.
- Individuals with conditions like diabetes or hypertension that increase the risk of kidney problems.
Preparation
- No specific preparation is generally required.
- Follow any specific instructions provided by your healthcare provider.
- Inform the healthcare provider of any medications or supplements you are taking.
Procedure Description
- A healthcare professional draws a blood sample, typically from a vein in your arm.
- The blood sample is sent to a laboratory, where the level of creatinine is measured.
- The results are then analyzed in context with other tests and clinical evaluations.
Duration
The blood draw itself takes only a few minutes.
Setting
The procedure is typically performed in a hospital, outpatient clinic, or doctor's office.
Personnel
A phlebotomist or nurse usually collects the blood sample.
Risks and Complications
- Minor bruising or discomfort at the needle insertion site.
- Rarely, infection or phlebitis (inflammation of the vein) may occur.
Benefits
- Provides crucial information about kidney health.
- Helps detect kidney problems early, allowing for timely intervention.
- Can guide treatment decisions and medication adjustments.
Recovery
- No recovery time is needed; normal activities can be resumed immediately.
- Follow any specific post-procedure instructions provided by the healthcare provider.
Alternatives
- Urine creatinine test, which measures creatinine levels in a urine sample.
- Estimated Glomerular Filtration Rate (eGFR), which is calculated based on the blood creatinine level and other factors.
- Pros and cons: The blood creatinine test is a direct, simple measure of kidney function, while alternatives might require different samples or additional calculations.
Patient Experience
- The patient may feel a slight pinch when the needle is inserted.
- Minimal pain or discomfort should be expected.
Most patients can return to regular activities right after the procedure.
By following these steps, a clearer understanding of your kidney health can be gained, ensuring timely and effective medical care.