eGFR, or estimated glomerular filtration rate, is a measure of how well your kidneys are working. It's a key indicator of kidney health.
Understanding eGFR
Your eGFR is not directly measured but rather estimated using a blood test, specifically looking at creatinine levels. This creatinine level is then combined with other factors like your age, sex, and body type to determine your eGFR. Here's a breakdown:
- Creatinine: This is a waste product in your blood. Healthy kidneys filter creatinine out of your blood into your urine.
- Estimation: The eGFR is not a direct measurement but an estimate based on the creatinine level and other personal data. This makes it a practical way for doctors to monitor kidney health.
- Reliability: According to the provided information, eGFR is considered a mostly reliable test for doctors to assess kidney function.
How eGFR is Calculated
| Factor | Description |
|---|---|
| Blood Creatinine | The level of creatinine in your blood. |
| Age | Kidney function tends to decline with age. |
| Sex | Biological sex impacts the equations used for eGFR calculation. |
| Body Type | Body size can affect kidney function and therefore is considered in eGFR calculations. |
Why is eGFR Important?
- Kidney Health Indicator: eGFR helps to diagnose and monitor kidney disease.
- Early Detection: Changes in eGFR can indicate a potential problem early on, allowing for timely intervention.
- Treatment Guidance: eGFR helps doctors determine the best course of treatment if kidney disease is present.
- Monitoring Over Time: Regular eGFR testing helps track the progression of kidney disease or response to treatment.
Practical Insights
- A higher eGFR is generally better.
- A low eGFR indicates decreased kidney function.
- Talk to your doctor about your specific eGFR result, as what is considered "normal" can depend on many individual factors.
- Regular eGFR testing is often recommended for individuals at higher risk of kidney disease (e.g., those with diabetes, high blood pressure).
In short, eGFR is a vital tool in assessing kidney health. Regular monitoring can help detect potential problems early and allow for proper management.
