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Published on: Jan 23, 2022
3 minute read
By: Second Medic Expert

Diagnostics: Kidney Function Test

Diagnostics: Kidney function Test

Blood and urine tests are done to check kidney function.

Blood tests that can help assess kidney function include creatinine level, blood urea nitrogen level, and estimated glomerular filtration rate (eGFR).

Urine tests that can help assess kidney function include urine protein test, urine specific gravity test, and urine creatinine test.

What tests are done to check kidney function?

The most common tests to check kidney function are a blood test called creatinine and a urine test called albumin.

Creatinine is a waste product that is released into the blood when the muscle is damaged. So if the kidneys are not working properly, creatinine levels will go up. Albumin is a protein that is found in the urine. If the kidneys are not working properly, more albumin will leak out of the kidneys and into the urine.

Other tests that may be done to check kidney function include:

-A blood test to measure creatinine clearance. This measures how well the kidneys are filtering creatinine from the blood.

-A urine test to measure protein levels. High protein levels

When a doctor checks kidney function, they will order a blood test to check creatinine levels and blood urea nitrogen levels. These tests give an indication of how well the kidneys are working. If the creatinine or BUN levels are high, it means that the kidneys are not working properly. The doctor may also order a urine test to look for albumin in the urine. Albumin is a protein that is normally filtered out by the kidneys. If there is albumin in the urine, it means that the kidneys are not working properly.

What is the most accurate test for kidney function?

The most accurate test for kidney function is a creatinine blood test. It measures the level of creatinine in your blood. Creatinine is a waste product that is released when muscle tissue is damaged. So the higher your creatinine level, the more damage your kidneys have sustained.

Other tests that can be used to measure kidney function include a BUN (blood urea nitrogen) test and urine analysis. However, both tests are less accurate than the creatinine blood test.

What is a normal kidney function level?

Normal kidney function is when the kidneys filter wastes and excess fluid from the blood to make urine. The normal range for creatinine, a waste product that is filtered out by the kidneys, is 0.5 to 1.1 mg/dL for women and 0.6 to 1.2 mg/dL for men. Urine output should be about 600 to 800 mL per day. If you have symptoms such as foamy urine, swelling in your legs, shortness of breath, or chest pain, see your doctor right away because they may be signs of a problem with your kidneys.

Normal kidney function is defined as a creatinine level below 1.5 mg/dL in men and below 1.4 mg/dL in women. Creatinine is a waste product that is eliminated from the body through the kidneys. When the kidneys are functioning properly, they filter creatinine and other waste products from the blood and excrete them in urine. A creatinine level that is higher than normal indicates that the kidneys are not filtering blood as efficiently as they should be. This can be a sign of many different diseases or conditions, including kidney disease, liver disease, heart failure, and diabetes.

What are the first signs of kidney disease?

The first signs of kidney disease are usually subtle and can be easily missed. Here are five common early signs of kidney disease:

1) Changes in urine output, such as a decrease in the amount of urine produced or an increase in the amount of time needed to produce a full bladder

2) Increased thirst and urination, caused by the body's efforts to get rid of excess fluid by increasing urine production

3) Foamy or bubbly urine, a sign that protein is spilling over into the urine from damaged kidneys

4) Swelling in feet, ankles, and legs, caused by buildup of fluid called edema

5) Feeling tired and sluggish all the time, possibly due to anemia

Can a blood test detect kidney problems?

Yes. A blood test can detect kidney problems by looking for biomarkers in the blood that indicate a problem with the kidneys.

Some common biomarkers that may be detected in a blood test include creatinine, urea nitrogen, and albumin. If any of these biomarkers are elevated, it may indicate that there is a problem with the kidneys.

Kidney problems can be detected through blood tests, although the specific tests used will vary depending on the nature of the kidney problem.

Some common blood tests used to detect kidney problems include:

-A creatinine level, which measures how well your kidneys are filtering waste products from your blood

-A BUN level, which measures how much urea (a breakdown product of protein) is in your blood

-An albumin level, which measures how much albumin (a type of protein) is in your urine

-A creatinine clearance test, which measures how much creatinine is cleared from your blood per minute

Read Blog

Virtual Second Opinion Services India: Making Medical Decisions Safer, Smarter, and More Accurate

Healthcare decisions can be overwhelming, especially when dealing with serious diagnoses, complex treatment options, or long-term health conditions. In India, where diagnostic variability and specialist availability differ across regions, seeking a second medical opinion has become essential for clarity and confidence. Virtual second opinion services India allow patients to consult top specialists online, review diagnoses, validate reports, and confirm treatment plans without traveling long distances.

SecondMedic has emerged as a trusted platform for virtual second opinions, connecting users with experienced specialists across cardiology, oncology, neurology, orthopedics, nephrology, endocrinology, and other medical fields. These services empower patients with accurate information and reduce the risk of misdiagnosis or unnecessary treatments.

Why Second Opinions Are Becoming Important in India

According to WHO, nearly 20-30% of medical errors globally stem from misdiagnoses. In India, disparities in medical access and diagnostic quality can make it harder for patients to rely on a single opinion-especially for complex or high-risk conditions.

Patients seek second opinions for:

Cancer diagnosis
Cardiac issues (blockages, angioplasty recommendations)
Orthopedic surgeries
Neurological disorders
Kidney and liver conditions
Autoimmune diseases
Rare or chronic illnesses

A second opinion ensures that treatment decisions are well-informed and evidence-based.

How Virtual Second Opinion Services Work

Virtual second opinion platforms like SecondMedic make the process simple and accessible.

Steps include:

Uploading medical reports, scans, prescriptions, and lab results.
Selecting the specialty or condition.
AI tools help summarize and organize the case.
A specialist reviews the case in detail.
The patient receives a written report or video consultation explaining the recommendations.
Follow-up guidance is provided when needed.

This digital-first approach saves time and helps patients receive expert evaluations from anywhere in India.

Key Benefits of Virtual Second Opinions

1. Access to Top Specialists

Patients can connect with some of India's best doctors without needing to visit major metro hospitals.

2. Prevention of Misdiagnosis

A fresh review reduces the risk of incorrect or incomplete diagnoses.

3. Verification of Treatment Plans

Before committing to surgery or long-term therapy, patients receive reassurance and clarity.

4. Time and Cost Savings

Virtual reviews eliminate travel, long waiting lines, and high hospital consultation fees.

5. Emotional Confidence

Patients and families gain peace of mind through expert validation of medical decisions.

SecondMedic ensures case reviews are thorough, unbiased, and personalized.

Use Cases Where Second Opinions Make a Big Difference

Oncology

Cancer diagnoses often require multi-specialty inputs. Virtual tumor board reviews help patients choose the right treatment path.

Cardiology

Heart conditions like blockages, angioplasty recommendations, or arrhythmia management require accurate evaluations.

Orthopedics

Joint replacement or spine surgery recommendations often need second validation to avoid unnecessary procedures.

Neurology

Conditions like epilepsy, stroke, or movement disorders benefit from deeper case review.

Chronic Illnesses

Diabetes, hypertension, kidney disease, and thyroid disorders require long-term management strategies.

Why Virtual Second Opinion Is Better Than In-Person for Many Patients

More specialist availability
Faster review times
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Digital access to consolidated medical records
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Suitable for rural patients with limited access to tertiary care hospitals

Digital second opinions remove geographic barriers completely.

The Role of Technology in Second Opinions

AI enhances the clarity and accuracy of second opinions by:

Pre-sorting medical documents
Highlighting abnormalities in lab results
Summarizing doctor notes
Identifying missing tests
Flagging potential medical risks

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Challenges in India’s Traditional Second Opinion System

Long wait times at major hospitals
Difficulty obtaining complete medical records
Travel to metro cities
Lack of specialized doctors in Tier 2/3 cities
Inconsistent diagnostic quality

Virtual second opinion services solve all of these pain points.

Future Outlook

Virtual medical reviews will continue growing with:

AI-powered case analysis
Integration with electronic health records (EHRs)
Multi-specialty collaborative boards
Predictive diagnostics
Global doctor networks

SecondMedic aims to lead this space by offering deeper, faster, and more accurate medical reassessments.

Conclusion

Virtual second opinion services India empower patients to make informed, safe, and confident healthcare decisions. By connecting users with top specialists and leveraging AI-driven insights, SecondMedic ensures that every major medical choice is backed by expertise and clarity. This is especially valuable for complex diagnoses, chronic conditions, and surgical recommendations.

To request a virtual second opinion, visit www.secondmedic.com

References

WHO - Misdiagnosis data and clinical errors
NITI Aayog - Digital health transformation reports
ABDM - Digital health records and interoperability
Statista - Telehealth adoption in India
Lancet & NEJM - Studies on second opinions
SecondMedic clinical team insights

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