Kidney Stone Analysis by FTIR Test: Booking, Price, and Results
About Kidney Stone Analysis by FTIR Test: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | Calculus Stone Analysis, Renal Calculus Analysis, Stone FTIR, Kidney Calculus Test, Urinary Stone Analysis |
| Sample Type | Kidney stone (passed naturally in urine or surgically removed) |
| Fasting Required | No fasting required |
| Report Time | 2 to 5 days |
| Recommended For | All ages, males and females (more common in males aged 30 to 40) |
| Price | Starting at ₹1,400 |
What is a Kidney Stone Analysis by FTIR Test?
A kidney stone analysis by FTIR uses Fourier transform infrared spectroscopy to identify what a kidney stone is made of. The test works by exposing the stone sample to infrared light, which creates a unique absorption pattern for each chemical component present. Doctors use this information to understand why a stone formed and how to reduce the chance of future stones. This test is also called a Calculus Stone Analysis, Renal Calculus Analysis, or Kidney Calculus Test.
What Does a Kidney Stone Analysis by FTIR Test Measure?
The test identifies the chemical components of a kidney stone and reports each as a percentage of the total stone composition. There are four main stone types that the renal stone analysis can detect.
| Stone Type | Description |
|---|---|
| Calcium oxalate or calcium phosphate | The most common type, calcium oxalate, is the most frequently found form |
| Uric acid | Forms when uric acid crystals build up in the kidneys |
| Cystine | A rare type linked to an inherited kidney condition called cystinuria |
| Struvite (magnesium ammonium phosphate) | The least common type; usually forms after a urinary tract infection |
Why is a Kidney Stone Analysis by FTIR Test Done?
This test is requested when a kidney stone has been passed or removed, and a doctor needs to know its exact composition.
Common Symptoms That May Require This Test
The following symptoms may lead a doctor to investigate kidney stones and request a renal calculus analysis after a stone is collected.
- Persistent pain in the side of the abdomen or groin
- Difficulty in passing urine
- Blood in the urine
- Nausea and vomiting
- Cloudy or foul-smelling urine
- Fever with chills or shivering
- Severe pain on both sides of the back
Conditions This Test Can Help Detect
A kidney calculus test can help identify underlying causes or related conditions. These include:
- Recurrent kidney stone disease (up to half of all patients experience a repeat episode within five years)
- Uric acid stone disease, which is particularly common in people with type 2 diabetes or obesity
- Cystinuria, a rare inherited disorder affecting how the kidneys handle cystine
- Struvite stones linked to ongoing urinary tract infections
- Metabolic conditions affecting mineral levels in the urine, such as hypercalciuria or hyperoxaluria
Kidney Stone Analysis by FTIR Test for Chronic Disease Monitoring
Stone analysis is recommended as part of the initial evaluation for all newly diagnosed cases of kidney stone disease. It is also performed when stones recur shortly after treatment or return after a long stone-free period. The results guide long-term prevention, since knowing the stone type allows doctors to recommend specific dietary changes and follow-up tests.
How to Prepare and What to Expect
The collection process for this test is different from a standard blood or urine test, so knowing what to do in advance makes things straightforward.
Do You Need to Fast?
No fasting is required. The test analyses the physical stone sample, not blood or urine values, so there are no dietary restrictions before collection.
Practical Tips Before Your Test
Being prepared helps ensure the stone sample is collected correctly and reaches the laboratory in good condition.
- Ask your doctor or pharmacist for a kidney stone strainer, a small, fine-mesh device used to filter urine
- Inform your doctor of any medications you are taking, even though they do not typically affect the stone analysis itself
Step-by-Step Procedure
- Collect the kidney stone that has passed through your urine or been removed during a procedure.
- Clean and dry the stone, then hand it over to the collection team or visit a Lupin Diagnostics centre.
- In the laboratory, samples are taken from all visible layers of the stone and ground into a fine powder.
- Each powdered sample is exposed to infrared light, producing a unique absorption pattern.
- The resulting pattern is compared against a reference library of known stone components using computer matching software.
- A report is generated showing the percentage composition of each component identified in the stone.
Factors That Can Affect Accuracy
- A very small or fragmented stone sample may limit the analysis
- Mixing stones from separate episodes in one container can complicate the results
- Contamination from tissue or foreign material may affect the reading
- When a single kidney contains multiple stone types, the results may reflect a combined composition
Understanding Your Kidney Stone Analysis by FTIR Test Results
Results from this test should always be reviewed with your treating doctor, who will consider your symptoms, medical history, and other investigations alongside the stone composition report.
Unlike most laboratory tests, a renal stone analysis does not produce numerical reference ranges. The presence of a kidney stone is itself an abnormal finding. Instead, the report identifies the type of stone and the percentage of each chemical component present.
| Component Identified | What It May Suggest |
|---|---|
| Calcium oxalate or calcium phosphate | High calcium levels in urine; most common stone type |
| Uric acid | Excess uric acid in urine; often linked to acidic urine, gout, diabetes, or obesity |
| Struvite | Chronic urinary tract infection; more common in females |
| Cystine | Cystinuria, a rare inherited metabolic disorder |
Results During Special Conditions
The layer of the stone being analysed can influence what the results reveal. In some stones, the outer surface and inner core have different compositions, and both can be clinically meaningful in identifying when and why the stone formed. Calcium oxalate dihydrate stones suggest recent formation, meaning current urine composition is a reliable indicator of risk. Calcium oxalate monohydrate stones are generally older (more than two months), so current urine values may be less informative about the original cause.
How to Maintain Healthy Levels
These general wellness habits may help reduce the risk of stone recurrence.
- Drink enough water to produce at least 2.0 to 2.5 litres of urine each day; a target fluid intake of 2.5 to 3.0 litres daily is recommended.
- Include sufficient calcium in your diet (around 1,000 to 1,200 mg per day from food sources such as dairy) and increase your intake of citrus fruits; limit sodium.
- A diet rich in fruits and vegetables alongside moderate low-fat dairy is associated with the lowest risk of stone formation.
Lupin Diagnostics Kidney Stone Analysis by FTIR Test Price and Home Collection
The kidney stone analysis by FTIR test starts at approximately ₹1,400, and home collection is available across cities through Lupin Diagnostics.
| City | Approximate Price (₹) |
|---|---|
| Guwahati | ₹1,400 |
| Mumbai | ₹1,400 |
| Bangalore | ₹1,400 |
| Hyderabad | ₹1,400 |
| Chennai | ₹1,400 |
| Kolkata | ₹1,400 |
| Pune | ₹1,400 |
| Bhopal | ₹1,400 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
- Select the test on the Lupin Diagnostics website.
- Choose your city and preferred time slot.
- Opt for home sample collection by a certified phlebotomist, or visit your nearest Lupin Diagnostics centre.
- Receive your report via email or WhatsApp within the stipulated turnaround time.
Home Collection
Lupin Diagnostics offers home collection for the renal stone analysis across cities, making it convenient to submit your sample without visiting a centre. All samples are processed in NABL-accredited laboratories by experienced technologists. Your digital report is delivered securely via email or WhatsApp once ready.
Frequently Asked Questions
A kidney stone analysis by FTIR is a laboratory test that identifies the chemical makeup of a kidney stone. The results tell your doctor what type of stone you formed, which helps guide decisions about prevention. The test is performed on the stone itself, not on blood or urine.
Use a fine-mesh kidney stone strainer to filter your urine each time you use the toilet. Once the stone is caught, rinse it gently with distilled water, let it dry at room temperature for at least 24 hours, and place it in a clean, dry container. Your Lupin Diagnostics collection representative will then arrange pickup.
No fasting is needed before a calculus stone analysis. The test examines the physical stone rather than your blood chemistry, so food and drink do not interfere with the results.
FTIR analysis requires only a small amount of sample and can accurately identify most known stone components. Importantly, it can distinguish between calcium oxalate monohydrate and calcium oxalate dihydrate crystals, a distinction that standard chemical analysis cannot reliably make.
Medications do not generally affect the results of this test. Because the analysis examines the stone's chemical structure directly, your current medicine intake does not alter the laboratory findings.
Recurrent stone formation is common; about half of all people who have had a kidney stone develop another within five years. A renal calculus analysis after each episode helps identify whether the stone type is changing and allows your doctor to adjust preventive strategies accordingly.
Yes, to a significant extent. Different stone types are linked to different underlying causes, such as high calcium in the urine, excess uric acid, recurring infections, or a genetic condition. By identifying the stone's composition, the kidney calculus test gives your doctor a clearer picture of what may be driving stone formation in your case.
Kidney Stone Analysis by FTIR Test: Booking, Price, and Results
