What exactly is a kidney function test?
These are simple blood and urine tests that can identify problems with your kidneys.
Who should get a kidney function test done?
Everyone. It helps to screen for kidney-related conditions and aid in early diagnosis. KFT is especially important for people with
- Identified kidney disease.
- Symptoms related to kidney conditions.
- Conditions that can harm the kidneys, such as diabetes or high blood pressure.
- High risk of getting kidney disease including those above 60 years of age, who smoke, or have a family history of kidney conditions, etc.
Think your kidneys may not be working properly?
Book a kidney function test with CNC PATHLAB and get tested at the convenience of your home.
What symptoms can be caused by kidney problems?
Symptoms that may indicate a problem with your kidneys include:
- Frequent urges to urinate
- Difficulty beginning urination
- Pain during urination
- High blood pressure
- Blood in the urine
- Swelling of the hands and feet
What are the different parameters in kidney function tests?
BUN, CREATININE, URIC ACID, SODIUM, POTASSIUM, CALCIUM, CHLORIDE, TOTAL PROTEIN, ALBUMIN
Kidneys play an important role in the removal of waste products and the maintenance of water and electrolyte balance in the body. Kidney Function Test (KFT) includes a group of blood tests to determine how well the kidneys are working. It is advised in case of symptoms suggestive of kidney problems such as puffiness around eyes, bloody or foamy urine, frequent urge to urinate, etc.
This test is usually a part of routine health checkups. It helps to diagnose kidney-related disorders as well as monitor the treatment efficacy of kidney diseases.
Why is KFT done?
The Kidney Function Test is performed:
- As a part of routine health checkups
- To help diagnose any disease affecting the kidneys
- To screen people at risk for the development of kidney diseases
- To monitor the treatment efficacy of kidney diseases
What does KFT Measure?
The kidneys are a pair of bean-shaped organs located on either side of the spinal column in the abdomen towards the back. The kidneys perform a number of important functions. The most important of these is that they filter the blood and separate the waste products generated out of regular metabolic activities of the body, primarily urea. Following the separation, the kidneys excrete the waste products out of the body through urine. They help in maintaining the normal pH level and water balance of the body. The kidneys also play essential roles in the synthesis of Vitamin D and Red Blood Cells (RBCs).
The Kidney Function Test includes the following tests to monitor kidney function:
- Blood Urea Nitrogen (BUN)/ Urea:
Blood Urea Nitrogen test to measure the amount of urea nitrogen present in the blood. Urea is a nitrogenous by-product of the metabolism of protein, and its level in blood serves as an indication of the amount of nitrogen present in the blood as urea. In simpler terms, BUN is the measure of the amount of nitrogen present in blood in the form of urea. High BUN levels in the blood can be caused as a result of kidney diseases, dehydration, and obstruction in the urinary tract due to kidney stones, prostate gland enlargement, etc.
The urea test measures the level of urea in the blood. Urea is a final waste product formed from the breakdown of proteins. Urea is filtered out of the blood by the kidneys to excrete excess nitrogen present in the blood through urine. Excess of urea in blood is called uremia and can be caused by a number of conditions including kidney diseases.
- Uric Acid:
This test measures the level of uric acid in the blood. Uric acid is a waste product formed from the breakdown of purines, which are essential building blocks of DNA. It is also produced by the metabolism of proteinaceous food, especially red meat. Uric acid is excreted from the body by the kidneys through urine and a small portion through stool. The uric acid test indicates the level of uric acid in the blood and serves as an indirect estimation of the proper functioning of the kidneys.
The presence of excess amounts of uric acid in the blood is called hyperuricemia and causes gout due to the accumulation of uric acid crystals in the synovial fluid between joints. Hyperuricemia also causes the formation of hard lumps of uric acid crystals called tophi under the skin and at the top of the ears. Uric acid crystals can also accumulate in the kidneys and cause kidney stones.
This test measures the level of Creatinine in the blood. Creatinine is a waste product formed from the normal breakdown of muscles in the body. Creatinine is almost completely excreted by the kidneys, so its levels in the blood serve as an indication of kidney function.
Excess creatinine in the blood can be found due to decreased elimination from the kidneys as well as due to increased creatinine production by muscular breakdown, eating cooked meat, protein supplements, etc.
- BUN/Creatinine Ratio:
BUN/Creatinine Ratio compares the levels of nitrogen as urea in the blood to the levels of creatinine in the blood. This ratio serves as a more accurate representation of kidney function. It is also used to check for dehydration since the BUN level increases in dehydration while creatinine levels remain the same. Low BUN to creatinine ratio can be caused due to a low protein diet, liver cirrhosis, rhabdomyolysis (muscle disease), syndrome of inappropriate antidiuretic hormone secretion (SIADH) as well as during pregnancy.
You can book an online appointment for a KFT test in Delhi and choose the home sample collection option. Our phlebotomist crew is fully licensed, trained, and certified to collect blood samples from home. The KFT test price may differ from city to city. The cost of a KFT test in Delhi @CNCPathlab is very affordable. When making an online appointment for a KFT test with CNC Pathlab, one has the option of selecting home sample collection. The KFT Test results will be made available online within 24 hours of sample collection, at which point anyone can consult their doctor and decide on the best course of treatment depending on their results.
No Special Preparation Required.