How to Check Kidney Function: Blood Tests Explained

Early detection of kidney disease can greatly improve lives. Many people with kidney disease don’t show symptoms until their kidney function drops a lot. That’s why blood tests are key to catching problems early.

At Liv Hospital, we stress the need for kidney function testing through simple blood tests. These include the estimated glomerular filtration rate (eGFR) and creatinine screening. The eGFR test checks serum creatinine levels in the blood to see how well the kidney function is.

A normal eGFR is 60 or higher. If the result is below 60 for three months or more, it might mean kidney disease. We use international standards for kidney function tests to make sure we get accurate results.

Key Takeaways

• Blood tests are essential for detecting kidney disease early.
• The eGFR test is a key measure of kidney function.
• A normal eGFR is 60 or higher.
• Results below 60 for three months or more may indicate kidney disease.
• Comprehensive kidney function evaluations are available at Liv Hospital.

Understanding Kidney Function and Why Testing Matters

Our kidneys are key to removing waste and managing blood pressure. They filter out half a cup of waste and extra fluids every minute. This helps keep the right balance of minerals and electrolytes in our bodies.

The Role of Kidneys in Your Body

Kidneys are vital for our health. They help control blood pressure and balance minerals. They also make hormones that support bone and red blood cell health. Kidney function is closely linked to overall well-being, and any issues can cause big health problems.

Knowing how important kidneys are helps us see why regular tests are needed. Regular tests can spot problems early, allowing for quick action.

Signs That May Indicate Kidney Problems

It’s important to know the signs of kidney trouble. Look out for changes in how often you pee, swelling in your legs and feet, and feeling very tired. Other signs include blood in the urine, high blood pressure, and pain in your back or sides.

If you notice any of these symptoms, see a doctor right away. They can suggest tests, like the Estimated Glomerular Filtration Rate (eGFR) test, to check your kidney health.

How to Check Kidney Function Through Common Blood Tests

To check how well your kidneys are working, doctors often use blood tests. These tests help find and track kidney disease. They allow for early treatment and care.

The Estimated Glomerular Filtration Rate (eGFR) Test

The eGFR test is key for checking kidney function. It looks at the level of serum creatinine in your blood. This test is vital for catching kidney disease early, helping to slow it down.

Creatinine is made when muscles break down. Healthy kidneys remove it from the blood. The eGFR test uses your age, sex, and race, along with creatinine levels, to see how well your kidneys are working.

Creatinine Levels and What They Reveal

Creatinine levels show how well your kidneys filter waste. High levels mean your kidneys might not be working right. But, creatinine levels alone don’t tell the whole story.

The eGFR test looks at more factors to give a better picture of kidney health. It helps doctors find kidney disease and plan the right treatment.

Interpreting Your eGFR Results

Understanding eGFR results is important. A score of 90 or above is usually normal. Below 60 might mean kidney disease or poor function. Below 15 is a sign of kidney failure. Your doctor will look at your eGFR with your health and history in mind.

Knowing your eGFR results is key to managing your kidney health. If you have questions, talk to your doctor. They can help you understand your results and make the best choices for your care.

Additional Blood Tests for Complete Kidney Check

More blood tests, like BUN and Cystatin C, are key for a full kidney health check. The eGFR test shows how well your kidneys work. But these extra tests give more details about your kidney health and any problems.

Blood Urea Nitrogen (BUN) Test and Normal Ranges

The BUN test checks the urea nitrogen in your blood. Urea nitrogen is a waste your kidneys remove. Normal BUN levels are usually between 7 and 20 mg/dL, but can vary slightly.

High or low BUN levels can mean kidney disease or other health problems.

For more info on kidney function tests, check out kidney function page.

Cystatin C Test: Benefits for Specific Populations

The Cystatin C test is great for checking kidney function, mainly for some groups. It looks at Cystatin C, a protein made by all cells, in your blood. This test is good for older adults or those with different muscle sizes, as it’s less affected by muscle.

The Cystatin C test gives a more accurate kidney function check for these groups.

When and How Often to Get Kidney Function Tests

How often you need kidney function tests depends on your health, medical history, and risk for kidney disease. People at risk, like those with diabetes or high blood pressure, should get tested regularly. It’s important to talk to your doctor about how often you need tests.

Knowing about different blood tests and their benefits helps you keep an eye on your kidney health. Regular tests and talking to your doctor are important for catching and managing kidney problems early.

Conclusion: Monitoring Kidney Health Through Regular Testing

Regular kidney function tests are key to keeping your kidneys healthy. They help find problems early. Blood tests like eGFR check how well your kidneys are working.

Blood tests are important for spotting kidney disease. They help doctors understand how well your kidneys are working. This knowledge helps us take care of our kidneys better.

It’s important to talk to your doctor about getting these tests. Taking care of your kidneys now can help prevent serious problems later. This way, we can all stay healthy and avoid needing advanced medical care.

FAQ

References

National Health Service (NHS). Evidence-Based Medical Guidance. Retrieved from
https://www.nhs.uk/conditions/kidney-disease/diagnosis/[1