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A Kidney Function Test includes blood and urine tests that check how well your kidneys are working. These tests examine waste products, including creatinine, urea, and minerals, in your body. Healthy kidneys clean your blood by removing waste and extra water. If your kidneys aren't working properly, waste can build up and cause health problems. This guide will help you understand the test cost, why it's needed, how it's done, what normal results mean, and what to do with your results.
Purpose of the Kidney Function Test
The main purpose of this test is to evaluate the health of your kidneys. It helps doctors determine if your kidneys are filtering blood properly. This test is helpful in:
- Detect early kidney disease in people who may not yet show symptoms.
- Monitor chronic kidney disease (CKD) and track its progression.
- Assess kidney damage caused by diabetes, high blood pressure, or infections.
- Evaluate how certain medications may be affecting your kidney health.
- Support the diagnosis of other medical issues that involve the kidneys.
Getting tested on time can help detect kidney problems early, allowing for proper treatment to begin before the condition worsens.
Why is the Kidney Function Test Important?
Your kidneys play an essential role in maintaining your body's health. They filter your blood, remove waste, control fluid balance, and maintain proper levels of important minerals like sodium and potassium. If your kidneys aren't functioning properly, waste products and fluids can accumulate, leading to swelling, high blood pressure, and other health issues.
A Kidney Function Test helps catch problems early, often before you notice any symptoms. This early detection enables doctors to initiate treatment promptly, potentially preventing or slowing further damage. It also helps guide care for those already diagnosed with kidney issues or taking medications that may harm the kidneys.
When is the Kidney Function Test Recommended?
Doctors may recommend this test in the following cases:
- If you experience signs like swelling in your legs, ankles, or face, changes in how often you urinate, fatigue, or high blood pressure.
- If you have diabetes, high blood pressure, heart problems, or kidney issues in your family, you may need this test.
- When taking medications that can impact the kidneys, such as certain antibiotics, painkillers, or chemotherapy drugs.
- If you have conditions like urinary tract infections (UTIs), kidney stones, or autoimmune diseases.
- As a part of a routine health check-up, especially for people over 40 or those with risk factors.
How Does the Kidney Function Test Work?
The Kidney Function Test looks at several markers in your blood and sometimes urine to assess how well your kidneys are removing waste. Some common tests included are:
- Serum creatinine checks the amount of creatinine, a waste that your kidneys filter out of your blood.
- Blood urea nitrogen (BUN) checks the amount of nitrogen in your blood from urea, another waste product.
- Glomerular filtration rate (GFR) is an estimate of how well your kidneys are filtering.
- Electrolytes like sodium, potassium, and calcium are important minerals that can help your nerves and muscles work properly.
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Get Second OpinionKidney Function Test Procedure
The procedure for the Kidney Function Test is simple and quick:
How Should I Prepare for the Kidney Function Test?
This test typically requires no special preparation:
- No fasting is needed unless your doctor advises otherwise.
- Drink plenty of water before the test to stay hydrated, as this helps improve blood flow.
- Consult your doctor for any medications, supplements, or herbal remedies you're taking, as they can affect your results.
- Try to stay calm and relaxed to make the blood draw smoother.
- If you're pregnant or have any medical conditions like bleeding disorders, let the healthcare professional know in advance.
What Type of Sample is Collected for the Kidney Function Test?
The test is simple and typically requires a small blood sample to be taken from your arm. Sometimes, your doctor may also ask for a urine sample to check for problems like protein or blood. These samples are sent to a lab, and you'll usually get your results in a day or two.
How is the Kidney Function Test Performed?
In the laboratory, specialists perform the following:
- Use chemical tests or machines to measure waste products and minerals in the blood.
- Compare your test values to the standard reference ranges to determine if your kidneys are functioning properly.
- Sometimes, they use formulas to calculate your eGFR (estimated Glomerular Filtration Rate) to give a more accurate picture of your kidney function.
This analysis helps doctors determine whether your kidneys are functioning properly or if any damage or disease is affecting them.
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Understanding Kidney Function Test Results and Follow-Up
Here's how to interpret your results:
- Normal results mean your kidneys are functioning as they should.
- Low eGFR or high creatinine can be a sign of kidney damage or disease.
- High BUN may indicate kidney dysfunction or dehydration.
- An electrolyte imbalance may suggest a kidney or hormonal issue.
If your test results aren't normal, your doctor may:
- Recommend more detailed testing.
- Suggest lifestyle changes or start medications.
- Your doctor may send you to a kidney specialist if needed.
What Should I Do After Getting My Kidney Function Test?
Once you get your results:
- Go over the report with your doctor to understand what it means.
- Follow any advice for further tests or treatment if needed.
- If diagnosed with a kidney problem, follow your care plan strictly and get tested regularly.
- Maintain a kidney-friendly lifestyle:
- Eat healthy foods with less salt and not too much protein.
- Drink enough fluids.
- Avoid smoking and limit alcohol.
- Take medicines exactly as prescribed.
How Much Does the Kidney Function Test Cost in India?
The average cost of a Kidney Function Test in India is around Rs.500 to Rs.2500. However, the price may vary depending on the hospital, diagnostic center, and city.
Kidney Function Test Price in Different Cities Across India:
| City | Price |
|---|---|
| Hyderabad | Rs. 500 to Rs. 2500 |
| Vizag | Rs. 500 to Rs. 2500 |
| Nashik | Rs. 500 to Rs. 2500 |
| Chhatrapati Sambhaji Nagar | Rs. 500 to Rs. 2500 |
| Nellore | Rs. 500 to Rs. 2500 |
| Srikakulam | Rs. 500 to Rs. 2500 |
| Kurnool | Rs. 500 to Rs. 2500 |
| Kakinada | Rs. 500 to Rs. 2500 |
| Karimnagar | Rs. 500 to Rs. 2500 |
| Nizamabad | Rs. 500 to Rs. 2500 |
| Navi Mumbai | Rs. 500 to Rs. 2500 |
| Vizianagaram | Rs. 500 to Rs. 2500 |
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Frequently Asked Questions
The normal range of Kidney Function Tests in blood for men is between 0.7 and 1.3 mg/dL, and for women, it is between 0.6 and 1.1 mg/dL.
The doctor will recommend a KFT if the patient has conditions such as diabetes, high blood pressure, thyroid issues, pain during urination, blood in the urine, frequent urination, swelling in hands and feet, or a blocked urinary tract.
A creatinine level greater than 1.2 for women and greater than 1.4 for men may be an early sign that the kidneys are not working correctly.
The procedure is quick and usually causes only a little discomfort. You might feel a small prick when the needle goes in, but it only lasts for a moment and is generally easy to tolerate.
Most labs deliver test reports quickly, usually within 12 to 24 hours. You can receive your results through WhatsApp, email, or as a printed copy.
The kidney function test examines the levels of BUN (Blood Urea Nitrogen), creatinine, and glomerular filtration rate.
