Specific Gravity, Urine Test: Booking, Price, and Results
About Specific Gravity, Urine Test
| Field | Value |
|---|---|
| Also Known As | USG, Urine Density, S.G. Urine Test, Spec Grav, Sp Grav, U-Specific Gravity |
| Sample Type | Urine (midstream clean-catch; first-morning sample preferred) |
| Fasting Required | No fasting required |
| Report Time | Within 1 day |
| Recommended For | All ages and genders |
| Price | Starting at ₹90 |
What Is a Specific Gravity Urine Test?
The Specific gravity urine test measures how concentrated your urine is by comparing its weight to that of distilled water. It tells doctors how well your kidneys are filtering waste and maintaining the body's water balance. Also known as USG or Urine Density, this test uses a small urine sample collected in a sterile container. Doctors order it when they suspect dehydration, kidney problems, or other conditions affecting fluid balance.
What Does a Specific Gravity Urine Test Measure?
The Specific gravity urine test measures a single, key value — the concentration of dissolved substances in your urine. Here is what that tells us:
| Parameter | What It Reflects |
|---|---|
| Specific Gravity (SG) | The amount of dissolved waste, salts, and other substances in urine relative to pure water |
A reading close to 1.000 means urine is very dilute. A higher reading means urine is more concentrated. This single value gives a quick picture of how your kidneys are functioning and whether you are adequately hydrated.
Why Is a Specific Gravity Urine Test Done?
Doctors order this test for several reasons, from checking hydration to investigating kidney or hormonal conditions.
Common Symptoms That May Require This Test
The following symptoms may prompt a doctor to request this test:
- Dark yellow or amber-coloured urine
- Excessive thirst and dry mouth
- Fatigue or dizziness
- Frequent urination in large amounts
- Swelling in the legs or ankles
Conditions This Test Can Help Detect
The Specific gravity test can help identify a range of conditions, including:
- Dehydration caused by vomiting, diarrhoea, sweating, or fever
- Diabetes mellitus, where excess glucose spills into urine and raises its concentration
- Diabetes insipidus, a hormonal disorder that causes very dilute urine and excessive thirst
- Kidney inflammation (glomerulonephritis) or kidney infection (pyelonephritis)
- Liver disease or congestive heart failure, where the heart cannot pump blood effectively
- Adrenal insufficiency, where the adrenal glands do not produce enough hormones
How to Prepare and What to Expect
No complex preparation is needed for the specific gravity urine test. The process is straightforward and quick.
Do You Need to Fast?
No. Fasting is not required before this test. You can eat and drink normally beforehand.
Practical Tips Before Your Test
A few simple steps can help ensure an accurate result:
- Try to collect your sample first thing in the morning, when urine is most concentrated
- Let your doctor know about all medications you are taking, including diuretics (water pills), dextran, or sucrose, as these can affect results
- Inform your doctor if you are menstruating, as menstrual blood can interfere with results
- If you recently received intravenous contrast dye for an X-ray or MRI, wait at least three days before collecting your sample
- Avoid excessive consumption of foods such as beets and rhubarb before the test
Step-by-Step Procedure
The specific gravity test procedure involves providing a clean urine sample. Here are the steps:
- Clean the genital area with the antiseptic wipe provided, to reduce the chance of contamination.
- Begin urinating into the toilet, pause briefly, then direct the midstream flow into the sterile container until it is about halfway full.
- Avoid touching the inside of the container or its lid at any point.
- Seal the container securely and hand it to the healthcare professional or place it in the designated collection area.
- In the laboratory, a dipstick with a colour-sensitive pad is placed in the urine; the colour change indicates the specific gravity reading.
- In some cases, a refractometer (a device that measures how light passes through liquid) may be used for a more precise reading.
Factors That Can Affect Accuracy
Several things can influence the reading:
- Collection time — urine collected after drinking large amounts of fluid will appear more dilute than your actual baseline
- Diuretic medications, which reduce urine concentration
- High protein or glucose levels in urine, which raise the reading
- High-protein diets or excessive salt intake
- Intense physical activity without adequate hydration
Understanding Your Specific Gravity Urine Test Results
Your results should always be reviewed alongside your symptoms and medical history. The table below shows the general reference range used for this test.
| Parameter | Normal Range | Low (Below Normal) | High (Above Normal) |
|---|---|---|---|
| Specific Gravity | 1.005 to 1.030 | Below 1.005 | Above 1.030 |
A well-hydrated adult typically falls between 1.010 and 1.020. Values outside this range may point to dehydration, kidney conditions, or hormonal disorders. Normal ranges can vary slightly between laboratories.
These ranges are general guidelines. Your doctor will interpret your results based on your age, health history, and other factors. Always consult a qualified healthcare professional for personalised medical advice.
Results During Special Conditions
Certain situations can shift your result even when no disease is present. Your doctor will factor these in when reviewing your report:
- In patients with reduced kidney function, specific gravity may be fixed at around 1.010, reflecting the limited ability of the kidneys to concentrate or dilute urine.
- Pregnancy increases the kidney's filtration rate and can cause a lower reading than usual.
- Individuals with a higher body mass index (BMI) or greater lean body mass are more likely to have an elevated specific gravity.
How to Maintain Healthy Levels
These general wellness tips can support healthy urine concentration:
- Drink enough water throughout the day to keep your urine a pale yellow colour; increase your intake during exercise or hot weather.
- Limit caffeine and alcohol, both of which can increase fluid loss and concentrate urine.
- Follow a balanced diet and avoid excessive protein or salt intake, which can raise urine concentration.
Lupin Diagnostics Specific Gravity, Urine Test Price and Home Collection
The specific gravity test is available at Lupin Diagnostics starting at ₹90, with home sample collection available across cities.
| City | Approximate Price (₹) |
|---|---|
| BHOPAL | 100 |
| CHENNAI | 90 |
| HYDERABAD | 90 |
| KOLKATA | 120 |
| NAVI MUMBAI | 90 |
| PUNE | 100 |
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 1 day.
Home Collection
Specific gravity test home collection is available across multiple cities, making it convenient to get tested without visiting a centre. Your urine sample is collected by a trained professional and processed in a NABL-accredited laboratory. Digital reports are accessible via email or WhatsApp once ready.
Frequently Asked Questions
The specific gravity urine test checks how well your kidneys concentrate and dilute urine. It helps doctors assess your hydration status and screen for conditions such as kidney disease, diabetes, and hormonal disorders. It is a quick, non-invasive test that requires only a urine sample.
No fasting is needed. You can eat and drink as normal before providing your sample. However, avoid drinking very large amounts of water just before the test, as this can artificially lower your result.
The first-morning urine sample is preferred because it is the most concentrated of the day. This gives a more accurate baseline reading of your kidney's ability to concentrate urine overnight.
A high reading usually means your urine is concentrated. The most common cause is dehydration. It can also be associated with conditions such as uncontrolled diabetes, liver disease, congestive heart failure, or high levels of protein in the urine.
A low reading suggests your urine is very dilute. This can happen after drinking large amounts of fluid or taking diuretic medications. It may also point to conditions such as diabetes insipidus or kidney disease that affects the organ's ability to concentrate urine.
Yes. Diuretics (water pills) can lower the reading. Medications such as dextran and sucrose may also affect the result. Always inform your doctor about every medicine, supplement, or herbal product you are currently taking before the Specific Gravity Test.
Not at all. The Specific Gravity, Urine Test Procedure simply requires you to provide a urine sample in a sterile container. There is no needlework, pain, or any risk involved in sample collection.
Specific Gravity, Urine Test: Booking, Price, and Results
