Kidney Biopsy at KIMS Secunderabad — Ultrasound-Guided, NABL Pathology, Same-Day Discharge
At a glance — Kidney Biopsy at KIMS
- What it is: A procedure in which a small sample of kidney tissue is obtained using a needle through the skin — providing the only definitive diagnosis for glomerular kidney disease
- Guidance: Real-time ultrasound — the needle tip is visualised continuously throughout the procedure, ensuring accurate targeting and immediate detection of any complication
- Anaesthesia: Local anaesthesia with sedation — the patient is awake but comfortable and pain-free at the biopsy site
- Duration: 15 to 20 minutes from needle insertion to completion
- Pathology at KIMS: NABL-accredited laboratory providing the complete renal biopsy workup: light microscopy + immunofluorescence (IF) + electron microscopy (EM).
- Observation period: 6 hours post-procedure — monitoring for bleeding. Discharge home the same day in the absence of complications.
- Who performs the biopsy: KIMS nephrology team — the nephrologist who requested the biopsy and will interpret the results in the full clinical context
- Key specialist: Dr. Aswini Dutt T — glomerular disease expertise · IgA nephropathy · Membranous nephropathy · FSGS · Lupus nephritis
What is a kidney biopsy — and why is it less daunting than it sounds?
A kidney biopsy involves passing a fine needle through the skin of the back under ultrasound guidance to obtain a small core of kidney tissue — approximately 1 to 2cm in length and less than 2mm in diameter — for analysis in the pathology laboratory. The procedure takes 15 to 20 minutes. It is performed under local anaesthesia: the skin and the path to the kidney surface are numbed with lignocaine, meaning the patient feels pressure but not pain during needle insertion. Most patients describe the experience as significantly less uncomfortable than they anticipated.
The reason kidney biopsy is performed — rather than treating empirically or inferring a diagnosis from blood and urine tests alone — is that many kidney diseases are histologically distinct conditions that look identical on clinical and biochemical testing but require fundamentally different treatments. IgA nephropathy, membranous nephropathy, FSGS, minimal change disease, and lupus nephritis can all present with identical urinary protein levels and similar eGFR trajectories. The treatment for each is different. The prognosis for each is different. Treating without a biopsy means treating without knowing which condition is actually present — which means potentially giving the wrong treatment, with all the side effects of immunosuppression and none of the benefit.
A kidney biopsy is not performed out of caution or to satisfy academic curiosity. It is performed because the diagnosis — and therefore the treatment — cannot be determined with certainty without it. At KIMS, every biopsy request is discussed at the nephrology team level before the procedure is scheduled, and every biopsy result is interpreted by the nephrologist who knows the patient's full clinical history — not issued as a standalone laboratory report.
When is a kidney biopsy needed?
Not every kidney condition requires a biopsy. The KIMS nephrologist recommends biopsy when the histological diagnosis will change treatment — either by identifying a condition requiring specific therapy, by grading the severity of disease, or by excluding a condition that would be treated differently. The most common clinical situations requiring kidney biopsy at KIMS:
- Nephrotic syndrome in adults — all adult nephrotic syndrome requires biopsy to determine the underlying cause (membranous nephropathy, FSGS, minimal change disease, or secondary causes such as diabetic nephropathy or amyloidosis).
- Unexplained haematuria with proteinuria — blood and protein in urine without a clear structural cause. IgA nephropathy is the most common glomerular disease worldwide and presents this way; biopsy is required to confirm the diagnosis and assess Oxford MEST-C score.
- Rapidly progressive glomerulonephritis (RPGN) — acute kidney injury with active urinary sediment suggesting glomerular inflammation. Emergency biopsy to identify ANCA vasculitis, anti-GBM disease, or immune complex RPGN is performed at KIMS within 24 hours of clinical suspicion.
- Unexplained CKD of uncertain aetiology — patients with declining eGFR without a clear diagnosis of diabetic nephropathy or hypertensive nephrosclerosis may have a treatable glomerular disease identified on biopsy.
- Lupus nephritis — all patients with systemic lupus erythematosus and urinary abnormalities require biopsy to classify the WHO/ISN-RPS class (Class I through VI), as treatment intensity varies dramatically between classes.
- Post-transplant kidney dysfunction — biopsy of the transplanted kidney to distinguish rejection (acute cellular, antibody-mediated), calcineurin inhibitor toxicity, recurrent disease, or BK virus nephropathy.
- Monoclonal immunoglobulin-associated kidney disease — identifying amyloidosis, MIDD (monoclonal immunoglobulin deposition disease), or light chain cast nephropathy in patients with paraproteinaemia.
How kidney biopsy is performed at KIMS — step by step
| Stage | What happens |
|---|---|
| 1 — Pre-procedure preparation | Blood pressure, haemoglobin, platelet count, and coagulation (PT/INR/aPTT) are checked. Antiplatelet agents (aspirin, clopidogrel) are stopped 5 to 7 days before the procedure. Anticoagulants (warfarin) are bridged or stopped as appropriate. Written consent is obtained. |
| 2 — Positioning | The patient lies face down (prone) on the procedure table. A pillow is placed under the abdomen to push the kidney posteriorly and reduce the distance from the skin surface to the kidney capsule. |
| 3 — Ultrasound localisation | Real-time ultrasound identifies the lower pole of the kidney — the biopsy target. The lower pole is chosen because it has fewer major vessels than the hilum, minimising bleeding risk. Depth and angle are determined. |
| 4 — Local anaesthesia | Lignocaine is injected into the skin, subcutaneous tissue, and the path to the kidney capsule — the patient feels a brief sting, then progressive numbness. The kidney capsule itself is anaesthetised. |
| 5 — Biopsy needle passes | A spring-loaded automated biopsy gun (18-gauge needle) is fired two to four times through the anaesthetised tract into the kidney cortex under continuous ultrasound visualisation. The patient feels pressure and hears a click. |
| 6 — Immediate post-procedure | The biopsy site is compressed for 5 to 10 minutes. An ultrasound is performed immediately to check for any peri-renal haematoma. The patient is then transferred to the observation ward. |
| 7 — 6-hour observation | Blood pressure and pulse monitored every 30 minutes. Urine checked for haematuria — mild blood in urine is expected initially. If all observations are stable at 6 hours, the patient is discharged home with written instructions. |
KIMS NABL pathology — the complete renal biopsy diagnostic workup
A kidney biopsy is only as useful as the pathology laboratory that analyses it. The complete diagnostic evaluation of a renal biopsy requires three separate techniques — each providing information the others cannot:
Light microscopy (LM)
The biopsy core is stained with H&E, PAS, trichrome, and silver stains. LM identifies cellular proliferation, crescents, segmental sclerosis, tubular atrophy, interstitial fibrosis, and vascular changes. This is the foundation of the biopsy report.
Immunofluorescence (IF)
The unfixed core is stained with fluorescent antibodies (IgG, IgA, IgM, C3, etc). IF identifies the pattern of immunoglobulin deposition essential for classifying immune complex glomerulonephritis and monoclonal deposits.
Electron microscopy (EM)
Transmission EM allows visualisation at nanometre resolution. EM is essential for thin basement membrane disease, Alport syndrome, membranous nephropathy subtyping, and detecting amyloid fibrils missed on LM.
KIMS Differentiator: Many pathology laboratories in Hyderabad do not perform electron microscopy — or outsource it with delays of weeks. KIMS NABL-accredited laboratory performs all three components in-house. Conditions that are missed or misclassified at laboratories without EM capability — such as Alport syndrome or early membranous nephropathy — are identified correctly at KIMS.
Risks of kidney biopsy — what to know
| Complication | Frequency · Management at KIMS |
|---|---|
| Mild haematuria (blood in urine) | Frequency: Very common — expected in almost all patients. Management: Resolves spontaneously within 24 hours. Increased fluid intake. No intervention required. |
| Peri-renal haematoma (blood around kidney) | Frequency: Common — small haematomas in up to 90% on ultrasound. Management: Managed conservatively with bed rest. Significant haematomas are rare. |
| Macroscopic haematuria with clots | Frequency: Uncommon — approximately 3–5%. Management: Increased fluid intake. If clot retention develops, catheter and bladder washout. Resolves within 24–72 hours. |
| Significant bleeding requiring intervention | Frequency: Rare — less than 0.5%. Management: Angiographic embolisation of the bleeding vessel. Surgical exploration extremely rare. |
| Intrarenal arteriovenous fistula | Frequency: Uncommon — detected on Doppler. Management: Most resolve spontaneously. High-flow AVFs treated with embolisation if significant. |
| Infection | Frequency: Very rare. Management: Sterile technique throughout. Antibiotics only if signs of infection develop. |
| Injury to adjacent organs | Frequency: Very rare with real-time ultrasound guidance. Management: Continuous visualisation prevents needle misdirection. |
Warning Signs:
After discharge, contact KIMS (040 - 44885000) immediately if: you develop bright red blood in urine with clots; you cannot urinate despite urge; you develop fever above 38.5C; you experience severe flank pain or a fall in blood pressure. These are early signs of a significant post-biopsy bleed.
Why choose KIMS Secunderabad for kidney biopsy?
Real-time ultrasound guidance — precision and safety
Kidney biopsy without real-time guidance is a less safe technique. At KIMS, the needle tip is visualised continuously throughout every pass, confirming the correct position in the kidney cortex and allowing the operator to stop if the needle deviates. This is the standard of care for renal biopsy.
NABL-accredited pathology — LM, IF, and EM
A biopsy sent to a laboratory without IF and EM capability cannot provide a complete diagnosis. Several kidney diseases — Alport syndrome, thin basement membrane disease, membranous subtyping — require EM. KIMS performs all three components in its NABL-accredited laboratory in-house.
Glomerular disease expertise
At KIMS, the nephrologist who requested the biopsy — with knowledge of the patient's full clinical picture — reviews the biopsy report with the renal pathologist and explains the result and its treatment implications to the patient at a dedicated results consultation.
Expedited biopsy for urgent cases — RPGN
Rapidly progressive glomerulonephritis can destroy kidney function within days. At KIMS, emergency biopsy for clinically suspected RPGN is arranged within 24 hours. The biopsy result directs immediate treatment: plasmapheresis or high-dose immunosuppression.
Our kidney biopsy and glomerular disease team at KIMS Secunderabad
Frequently Asked Questions
The procedure itself is not painful — it is performed under local anaesthesia. Lignocaine is injected to numb the skin, subcutaneous tissue, and the path to the kidney capsule. The patient feels the initial sting of the lignocaine injection, then progressive numbness as the anaesthetic takes effect. When the biopsy needle passes, the patient feels pressure and hears a click — but not sharp pain. After the procedure, most patients describe mild flank discomfort that is manageable with paracetamol for 24 hours.
Blood and urine tests measure what the kidney is doing — how much protein it is leaking, how much urea it is filtering. They measure the consequences of disease, not the disease itself. Many completely different kidney diseases produce identical blood and urine test results. IgA nephropathy, membranous nephropathy, and FSGS can all present with the same degrees of proteinuria. Without a biopsy, treatment is empirical — which means it may be wrong. The biopsy provides the answer the tests cannot.
The biopsy procedure itself takes 15 to 20 minutes from the first local anaesthetic injection to completion. After the procedure, the patient is observed in the ward for 6 hours — blood pressure and pulse monitored every 30 minutes, urine checked for haematuria. If observations are stable at 6 hours, the patient is discharged home the same day. Patients are advised to rest at home the following day and avoid strenuous activity for 1 week.
KIMS performs the complete three-component renal biopsy workup in its NABL-accredited laboratory: light microscopy (LM) with multiple stains; immunofluorescence (IF) with antibodies against IgG, IgA, IgM, C3, C1q, etc.; and electron microscopy (EM) — visualising the glomerular basement membrane and deposits at nanometre resolution. The full report is available within 5 to 7 working days.
The main risk is bleeding. Mild haematuria (blood in urine) occurs in almost all patients and resolves within 24 hours. A small peri-renal haematoma (blood around the kidney) occurs in a proportion of patients but the vast majority resolve without intervention. Significant bleeding requiring transfusion or embolisation occurs in less than 0.5% of biopsies at experienced centres. Real-time ultrasound guidance at KIMS significantly reduces these risks.
Antiplatelet medications (aspirin, clopidogrel) must be stopped 5 to 7 days before the biopsy. Anticoagulants (warfarin, apixaban, rivaroxaban) must be stopped and managed according to the indication — the KIMS team will coordinate with your treating physician regarding bridging if needed. NSAIDs should be stopped at least 3 days before. Blood pressure must be controlled below 160/90 mmHg on the day.
The complete renal biopsy report from the KIMS NABL-accredited laboratory — including light microscopy, immunofluorescence, and electron microscopy — is available within 5 to 7 working days. For urgent cases (RPGN, acute kidney injury with active urinary sediment), a preliminary light microscopy report is available within 24 to 48 hours. Results are reviewed and explained at a results consultation.
KIMS Secunderabad — real-time ultrasound-guided biopsy (continuous needle visualisation throughout), NABL-accredited pathology laboratory performing the complete workup of light microscopy, immunofluorescence, and electron microscopy in-house, Dr. Aswini Dutt with specific glomerular disease expertise interpreting results in full clinical context, emergency same-day biopsy for RPGN, and a 6-hour observation protocol with same-day discharge.