Kidney Function Test ( KFT )
Kidney Function test is a collective term for a variety of individual tests and procedures that can be done to evaluate how well the kidneys are functioning.
The following individual tests including in the KFT:
3. Uric Acid
PREPARATION: Patient should not take anything before the testing. He/ She can only take water. There is typical fasting for 8-12 hours before the testing.
- Calcium: 8.2 - 10.6mg/ dL
- Creatinine: 0.6 - 1.2mg/ dL
- Potassium: 3.5 - 5.4mEq/ L
- Sodium: 133 - 146mEq/ L
- Uric Acid (Male): 2.1 - 8.5mg/ dL
- Uric Acid (Female): 2.0 - 7.0mg/ dL
- Urea Nitrogen (BUN):7 - 18mg/ dL
Symptoms of Kidney problems:
- High blood pressure
- Blood in the urine
- Frequent urges to urinate
- Difficulty beginning urination
- Painful urination
- Swelling of the hands and feet due to a buildup of fluids in the body
A single symptom may not mean something serious. However when occurring simultaneously these symptoms suggest that your kidneys aren’t working properly. Kidney function teste can help determine the reason.
Types of KFT:
Urinalysis: A urinalysis screens for the presence of protein and blood in the urine. There are many possible reasons for protein in your urine, not all of which are related to disease. Infection increases urine protein, but so does a heavy physical workout. Your doctor may want to repeat this test after a few weeks to see if the results are similar.
Your doctor may also ask you to provide a 24-hour urine collection sample. This can help doctors see how fast a waste product called creatinine is a breakdown product of muscle tissue.
Serum Creatinine Test: This blood test examines whether creatinine is building up in your blood. The kidneys usually completely filter creatinine from the blood. A high level of creatinine suggests a kidney problem.
Blood Urea Nitrogen (BUN): The blood urea nitrogen (BUN) test also checks for waste products in your blood. BUN tests measure the amount of nitrogen in the blood. Urea nitrogen is a breakdown product of protein. However, not all elevated BUN tests are due to kidney damage. Common medications, including large doses of aspirin and some types of antibiotics can also increase your BUN.
A normal BUN level is between 7 and 20. A higher value could suggest several different health problems.
Estimated Glomerular Filtration Rate (GFR): This test estimates how well your kidneys are filtering waste. The test determines the rate by looking at factors, Such as:
- Test results, specifically creatinine levels
Any result lower than 60 may be a warning sign of kidney disease.
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