Kidney Function Test (KFT) – Signs You Need to know

Your kidneys are only about the size of a fist, but they work like the city’s cleaning department inside your body. They remove toxins, filter extra water, balance minerals, and even help control blood pressure.

Most people don’t realize — when kidneys stop working properly, symptoms appear very late. In fact, kidney disease is called a “silent killer.”

That’s where the Kidney Function Test (KFT) comes in. This simple test can detect problems before it’s too late. At Kaizen Diagnostic Centre, Kalwa, we see many patients who never thought their kidneys were at risk until the KFT gave them early warnings.

Soch ke dekho: ek chhoti si blood test aapko dialysis aur transplant se bacha sakti hai.

What Exactly is a Kidney Function Test (KFT)?

A Kidney Function Test is not just one test — it’s a group of tests that check how well your kidneys are doing their job.

Main Components of KFT:

1. Serum Creatinine – Measures waste produced by muscles. If high → kidney damage possible.

2. Blood Urea Nitrogen (BUN) – Checks how well your body is clearing urea (a protein breakdown product).

3. Uric Acid – High levels can point to kidney disease, gout, or diet imbalance.

4. Electrolytes (Sodium, Potassium, Chloride) – Kidneys keep your body’s salt and fluid balance.

5. Calcium & Phosphorus – Indirectly show kidney–bone connection.

6. eGFR (Estimated Glomerular Filtration Rate) – This is the “report card” of kidney health.

Doctors may also add urine tests to check protein leakage, sugar, or infection.

Why is Kidney Function Test Important?

Kidneys do much more than just filter waste. They:

• Maintain the right water balance

• Keep blood pressure under control

• Produce a hormone (EPO) that makes red blood cells

• Activate Vitamin D for strong bones

If kidneys fail, your whole body is affected. But here’s the catch — 90% of people with kidney disease don’t know they have it.

That’s why KFT is a preventive shield.

Symptoms & Signs That You Need a KFT

Aapko kabhi lagta hai ki body mein kuch gadbad hai, but exact reason samajh nahi aata? Many times, it could be your kidneys.

Here are red flags:

• Swelling in legs, feet, face, or around eyes

• Foamy urine (protein leakage)

• Frequent urination, especially at night

• Dark or bloody urine

• Uncontrolled blood pressure

• Constant tiredness and weakness

• Loss of appetite, nausea, vomiting

• Back pain near kidney area

High-Risk Groups

Even if you don’t have symptoms, you must do KFT if you:

• Have Diabetes

• Have High Blood Pressure

• Have a family history of kidney problems

• Are above 40 years old

• Take painkillers frequently

• Have heart disease

Kidney Function Test for Diabetics & Hypertension Patients

Diabetes and high BP are the biggest villains for kidneys. Slowly, they damage the small blood vessels in kidneys. By the time symptoms show, damage is already advanced.

That’s why every diabetic and hypertension patient should do KFT once a year.

At Kaizen Diagnostic, Kalwa, we see many diabetic patients who discover kidney stress early because of regular KFT. Early action = kidney protection.

How is a Kidney Function Test Done?

Super simple process:

1. Blood sample taken from your arm.

2. Sometimes a urine sample is also required.

3. Reports ready in a few hours.

At Kaizen Diagnostic Centre, results are checked by expert pathologists for accuracy.

What Happens If KFT is Abnormal?

• Mild abnormality → doctor may suggest diet changes (less salt, less protein, more hydration) and lifestyle changes.

• Moderate abnormality → medicines + frequent monitoring.

• Severe abnormality → nephrologist consult required to prevent dialysis.

Diet & Lifestyle Tips for Healthy Kidneys

• Drink 8–10 glasses of water daily (unless advised otherwise by doctor)

• Eat less salt (avoid pickles, chips, papad, processed foods)

• Limit red meat & high-protein foods if kidneys are weak

• Control blood sugar and BP

• Avoid excess painkillers & antibiotics

• Stay physically active

 Pro Tip: Coconut water is great, but if you have high potassium levels, avoid it. Always check with your doctor.

Myths & Facts About Kidney Tests

Myth 1: Kidney problems show clear symptoms early.
Fact: Symptoms appear late; tests detect issues early.

Myth 2: Only old people need kidney checkups.
Fact: Even young diabetics, gym-goers using supplements, or those on painkillers may need KFT.

Myth 3: Drinking lots of water will always prevent kidney disease.
Fact: Too much water can be harmful in kidney failure. Balance is key.

FAQs About Kidney Function Test

Q1. How much does a KFT cost in Kalwa/Thane?
A: At Kaizen Diagnostic Centre, it is affordable and competitively priced. Call us for current package rates.

Q2. Is fasting required for KFT?
A: Usually, fasting is not required. But if combined with other tests, doctor may advise fasting.

Q3. How often should I get KFT done?
A: If you are healthy, once a year is enough. If diabetic or hypertensive, then every 6–12 months.

Q4. Can abnormal KFT be reversed?
A: Early kidney issues can be controlled with lifestyle and medicine. Advanced damage is difficult to reverse.

Why Choose Kaizen Diagnostic Centre, Kalwa for KFT?

• Modern automated lab machines

• Experienced pathologists, lab technicians & phlebotomists

• Fast, reliable & accurate reports

• Affordable pricing

• Convenient location for Kalwa & Thane residents

 We also provide home sample collection for KFT and other pathology tests.