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Nuclear Medicine

DTPA Renal Scan in Hyderabad: Kidney Function & Drainage Assessment

By Focus Diagnostics

9 October 2026

10 min read

DTPA Renal Scan in Hyderabad: Kidney Function & Drainage Assessment

A DTPA renal scan is a nuclear medicine examination used to evaluate kidney function, blood flow to the kidneys and the movement of urine through the urinary system. It provides functional information that can complement other kidney investigations such as ultrasound, CT, MRI and blood tests.

A DTPA renal scan in Hyderabad may be recommended when a doctor needs to understand how well each kidney is functioning or whether urine is flowing normally from the kidneys into the urinary tract.

The examination uses a small amount of a radioactive tracer and a gamma camera to capture images as the tracer passes through the kidneys.

What Is a DTPA Renal Scan?

DTPA renal scan is a type of nuclear medicine renal scan that uses a radiotracer to evaluate kidney function and drainage.

DTPA refers to diethylenetriamine pentaacetic acid, a compound that can be used as part of a radiotracer for renal imaging.

After the tracer is administered, it travels through the bloodstream to the kidneys. The nuclear medicine camera records its movement through the kidneys and urinary system.

This allows doctors to assess aspects such as blood flow, tracer uptake, kidney function and urinary drainage.

Why Is a DTPA Renal Scan Done?

A doctor may recommend a DTPA renal scan when functional information about the kidneys is needed.

It may be used for selected situations such as:

  • Assessment of kidney function
  • Evaluation of individual kidney function
  • Assessment of renal blood flow
  • Evaluation of urinary drainage
  • Suspected urinary obstruction
  • Evaluation of hydronephrosis in selected cases
  • Assessment after certain urinary tract procedures
  • Follow-up of selected kidney or urinary tract conditions

The exact reason for the scan depends on the patient's symptoms, medical history and the clinical question being investigated.

How Does a DTPA Renal Scan Work?

The examination begins with administration of the DTPA radiotracer, usually through an intravenous injection.

The tracer travels through the bloodstream and reaches the kidneys.

A gamma camera continuously or repeatedly captures images as the tracer passes through the kidneys and into the urinary system.

The images allow the nuclear medicine team to observe the movement of the tracer and assess the functional performance and drainage of the kidneys.

What Does a DTPA Renal Scan Show?

A DTPA renal scan can provide information about several aspects of kidney function.

It may help evaluate:

  • Blood flow to the kidneys
  • Tracer uptake by each kidney
  • Relative function of the two kidneys
  • Movement of tracer from the kidneys into the urinary tract
  • Possible delay in urinary drainage
  • Functional patterns associated with selected kidney conditions

The scan provides functional information rather than simply showing the anatomical structure of the kidneys.

What Is Differential Renal Function?

One useful aspect of a renal scan is that it can help estimate the relative contribution of each kidney to overall kidney function.

The two kidneys may not always contribute equally. In selected clinical situations, doctors may need to know how much each kidney contributes.

This information can be useful when evaluating certain kidney or urinary tract conditions and when planning or monitoring treatment.

The results should always be interpreted along with other clinical findings and investigations.

DTPA Renal Scan for Urinary Drainage

A DTPA renal scan can help evaluate how effectively urine moves from the kidneys into the urinary tract.

If the movement of the tracer appears delayed, the doctor may investigate whether there is an obstruction or another reason for impaired drainage.

Additional information from ultrasound, CT or other examinations may be required to understand the underlying cause.

DTPA Renal Scan for Kidney Function

A DTPA renal scan can provide functional information about each kidney.

This can be useful when there is a difference in kidney function or when the doctor needs to assess how individual kidneys are performing.

The scan does not replace routine kidney function blood tests, but it can provide different information about renal perfusion and function.

What Happens During a DTPA Renal Scan?

The procedure generally involves several steps.

Step 1: Preparation

The medical team reviews the prescription and provides instructions before the examination.

Depending on the clinical situation, the patient may be advised to drink fluids before the scan.

Step 2: Radiotracer Administration

A small amount of DTPA radiotracer is administered, usually through an intravenous injection.

Step 3: Imaging

The patient is positioned appropriately for imaging.

The gamma camera records the movement of the radiotracer through the kidneys and urinary system.

Step 4: Image Processing

The acquired images are processed using specialized software.

The resulting information can help assess kidney function, relative renal function and urinary drainage.

Step 5: Reporting

The images and functional data are reviewed by the appropriate medical professional, and a report is prepared for the referring doctor.

How Long Does a DTPA Renal Scan Take?

The duration of a DTPA renal scan varies depending on the examination protocol and the patient's clinical condition.

Because the scan records the movement of the radiotracer through the kidneys, imaging is generally performed over a period of time rather than as a single photograph.

Patients should allow sufficient time for preparation, radiotracer administration and image acquisition.

The nuclear medicine team can provide the expected duration when the appointment is scheduled.

How Should You Prepare for a DTPA Renal Scan?

Preparation may vary depending on the clinical indication and the protocol being used.

Patients may be advised to:

  • Drink adequate fluids before the examination
  • Follow instructions regarding food or fasting if applicable
  • Inform the medical team about current medications
  • Inform the team about existing kidney or urinary tract conditions
  • Inform the team about pregnancy or possible pregnancy
  • Inform the team if breastfeeding

Some medications may influence urinary drainage or kidney function measurements. Patients should follow the specific instructions given by their doctor or nuclear medicine team.

Do not stop prescribed medication unless specifically instructed.

Is a DTPA Renal Scan Painful?

The imaging procedure itself is generally painless.

The radiotracer is usually administered through an intravenous injection, which may cause brief discomfort at the injection site.

During the scan, the patient generally needs to remain in the required position while the gamma camera records the tracer's movement.

Is a DTPA Renal Scan Safe?

A DTPA renal scan involves exposure to a small amount of radiation from the radiotracer.

The amount of radiotracer is selected according to the examination protocol and clinical requirement.

Nuclear medicine examinations are performed when the expected clinical benefit is considered appropriate.

Patients should inform the medical team if they are pregnant, may be pregnant or are breastfeeding before undergoing the examination.

DTPA Renal Scan vs Ultrasound

A renal ultrasound and DTPA renal scan provide different types of information.

Ultrasound mainly provides anatomical information about the kidneys and urinary tract. It can help identify features such as kidney size, structure and certain types of obstruction or urinary tract abnormalities.

A DTPA renal scan provides functional information about kidney perfusion, tracer uptake and urinary drainage.

Depending on the clinical situation, a doctor may recommend one test or both.

DTPA Renal Scan vs CT Scan

CT can provide detailed anatomical images of the kidneys and urinary tract.

A DTPA renal scan focuses on functional information and tracks the movement of a radiotracer through the kidneys.

The two examinations answer different clinical questions and may sometimes be complementary.

What Happens After a DTPA Renal Scan?

Most patients can return to their normal activities after the examination unless specific instructions are provided.

Patients may be advised to drink fluids after the scan to support normal elimination of the radiotracer.

The acquired images are processed and interpreted by the appropriate medical professional. The report is then provided to the referring doctor.

DTPA Renal Scan Cost in Hyderabad

The cost of a DTPA renal scan in Hyderabad can vary depending on the examination protocol, radiotracer, clinical indication and reporting requirements.

For an accurate price, patients should provide the exact scan name mentioned on their doctor's prescription when contacting the diagnostic centre.

DTPA Renal Scan in Hyderabad

Patients looking for a DTPA scan in Hyderabad can contact Focus Diagnostics to enquire about the examination, preparation requirements, availability and appointment details.

When contacting the centre, it is useful to have the doctor's prescription or referral available so that the exact examination can be confirmed.

Why Choose Focus Diagnostics?

Focus Diagnostics provides diagnostic imaging and laboratory services for patients in Hyderabad.

If your doctor has recommended a DTPA renal scan or another nuclear medicine kidney examination, you can contact Focus Diagnostics to enquire about the required test and preparation instructions.

The appropriate examination should be selected according to your doctor's clinical recommendation.

When Might a Doctor Recommend a DTPA Renal Scan?

A doctor may consider a DTPA renal scan when information about kidney function, renal perfusion or urinary drainage is required.

The decision may depend on:

  • Symptoms
  • Kidney function test results
  • Ultrasound findings
  • Previous CT or MRI findings
  • History of urinary obstruction
  • Previous urinary tract procedures
  • Suspected difference in kidney function

The scan may complement other kidney and urinary tract investigations.

Book a DTPA Renal Scan in Hyderabad

If you have been advised to undergo a DTPA renal scan, contact Focus Diagnostics with your doctor's prescription or referral.

The diagnostic team can provide information about the examination, preparation, availability and appointment requirements.

For appointments and enquiries: 91213 77123

Conclusion

A DTPA renal scan is a nuclear medicine examination that provides functional information about the kidneys. It can help assess renal perfusion, kidney function, relative function between the kidneys and urinary drainage.

The examination uses a DTPA radiotracer and gamma camera to track the movement of the tracer through the kidneys and urinary system.

If you are looking for a DTPA renal scan in Hyderabad, speak with your doctor and contact the diagnostic centre with your prescription to confirm the appropriate examination and preparation requirements.

Frequently Asked Questions

What is a DTPA renal scan?

A DTPA renal scan is a nuclear medicine examination used to evaluate kidney function, renal perfusion and urinary drainage using a DTPA radiotracer and gamma camera.

Why is a DTPA scan done?

It may be recommended to assess kidney function, compare the function of both kidneys or evaluate urinary drainage in selected clinical situations.

What does a DTPA renal scan show?

It can provide information about renal blood flow, tracer uptake, relative kidney function and movement of tracer through the urinary system.

Is DTPA renal scan painful?

The imaging itself is generally painless. The intravenous injection used to administer the radiotracer may cause brief discomfort.

How long does a DTPA renal scan take?

The duration varies depending on the examination protocol. Imaging records the movement of the tracer through the kidneys over a period of time.

Do I need to fast before a DTPA renal scan?

Preparation depends on the examination protocol. Patients should follow the instructions provided by the nuclear medicine team.

Should I drink water before a DTPA renal scan?

Patients may be advised to maintain adequate hydration before certain renal scans. Follow the specific instructions provided by your diagnostic centre.

Is a DTPA renal scan safe?

The scan involves a small amount of radiation from the radiotracer. It is performed when clinically appropriate. Inform the medical team about pregnancy, possible pregnancy or breastfeeding.

Can a DTPA scan measure the function of each kidney?

A DTPA renal scan can provide information about the relative contribution of each kidney to overall renal function in appropriate examinations.

Where can I get a DTPA renal scan in Hyderabad?

You can contact Focus Diagnostics at 91213 77123 to enquire about DTPA renal scan availability, preparation requirements and appointments.

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DKReviewed by Dr. Koushik Aravapalli, MBBS, DMRD, DNB, EDIR, DICR

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