Urine Examination For Reducing Substances: Booking, Price, and Results
About Urine Examination For Reducing Substances: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | Urine Reducing Sugars Test, Benedict's Test (Urine), Clinitest, Urine for Non-Glucose Reducing Substances |
| Sample Type | Random urine (mid-stream clean catch) |
| Fasting Required | No |
| Report Time | 1 Day |
| Recommended For | All ages; primarily newborns, infants, and children with suspected carbohydrate metabolism disorders |
| Price | Starting at ₹120 |
What Is a Urine Examination For Reducing Substances?
The urine examination for reducing substances is a screening test that checks urine for the presence of sugars and other reducing compounds. It is most commonly ordered for newborns and infants to detect inherited metabolic conditions at an early stage. Also referred to as the Urine Reducing Sugars Test or Benedict's Test (Urine), it uses a small urine sample collected at home or at a collection centre.
What Does a Urine Examination For Reducing Substances Measure?
The urine examination for reducing substances test checks for compounds in urine that have the chemical property of reducing copper ions. The table below outlines what is detected.
| What Is Measured | Why It Matters |
|---|---|
| Reducing substances (qualitative) | Screens for the presence or absence of abnormal sugars in urine |
| Reducing substances (semi-quantitative) | Estimates the concentration to guide further investigation |
| Non-glucose reducing sugars (e.g., galactose, fructose, lactose) | A positive result with a negative glucose dipstick points to other reducing sugars such as galactose or fructose |
| Glucose | May indicate diabetes or renal glycosuria when detected |
Why Is a Urine Examination for Reducing Substances Done?
A doctor may request this test for a number of reasons, ranging from newborn screening to investigating unexplained symptoms in older children.
Common Symptoms That May Require This Test
The following symptoms are the most common reasons a doctor may order a urine examination for reducing substances:
- Jaundice (yellowing of the skin or eyes) in a newborn or infant
- Vomiting that is unexplained or persistent
- Poor feeding or refusal to feed
- Failure to thrive (poor weight gain or growth)
- Lethargy or unusual tiredness
- Liver enlargement
- Developmental delay
Conditions This Test Can Help Detect
This test can assist in identifying the following conditions:
- Galactosaemia (inability to properly break down galactose sugar)
- Hereditary fructose intolerance (inability to metabolise fructose)
- Essential fructosuria (a benign condition involving low liver enzyme activity)
- Lactosuria (lactose in urine, which may occur during pregnancy or breastfeeding)
- Essential pentosuria (excess excretion of a specific sugar called L-xylulose)
- Glycosuria (sugar in urine that may suggest diabetes or renal glycosuria)
Urine Examination For Reducing Substances During Pregnancy
Lactosuria, the presence of lactose in urine, can occur during late pregnancy and breastfeeding. This is generally a normal physiological change and not a cause for concern. However, a positive result during pregnancy still requires a doctor's review to rule out other causes.
How to Prepare and What to Expect
No special preparation is needed for this test. The procedure is straightforward and involves collecting a urine sample at home or at a collection centre.
Do You Need to Fast?
No fasting is required before the urine examination for reducing substances test. You can eat and drink normally before giving your sample.
Practical Tips Before Your Test
Keep the following in mind before collecting your sample:
- Collect the first urine of the day for the best sample quality
- Clean the genital area thoroughly with water or antiseptic wipes before collection
- Inform the laboratory about any medications you or your child are taking, particularly vitamin C supplements, aspirin, cephalosporins, penicillins, or levodopa
- Use only the sterile container provided; do not use any other container
- Submit the sample within 2 hours of collection, or refrigerate it (2 to 8°C) if there is a delay
Step-by-Step Procedure
- Clean the genital area with water or the antiseptic wipes provided.
- Begin urinating into the toilet, then shift the sterile container to collect the midstream portion of urine.
- Avoid touching the inside of the container or lid to prevent contamination.
- Collect at least 5 ml of urine and secure the lid tightly.
- Label the container with the patient's name and the date of collection.
- Deliver the sample to the laboratory within 2 hours, or refrigerate it at 2 to 8°C if immediate transport is not possible.
Factors That Can Affect Accuracy
The following factors may affect the reliability of the test:
- Contamination of the sample container
- Collecting only the first or last stream of urine rather than the mid-stream portion
- Delay in sample transport or improper storage temperature
- High-dose vitamin C (ascorbic acid) supplements, which can cause a false positive
- Certain medications, including beta-lactam antibiotics, levodopa, and salicylates
- Contrast agents used in recent radiological procedures
Understanding Your Urine Examination For Reducing Substances Results
Results from this test are typically reported as negative, trace, or positive (graded 1 to 4). A doctor must always review results alongside the patient's clinical history and other investigations.
| Grade | Concentration | Interpretation |
|---|---|---|
| Negative or Trace | Less than 0.25 g/dL | Normal expected result |
| Grade 1 (Suspicious) | 0.25 to 0.5 g/dL | Borderline; follow-up may be needed |
| Grade 2 to 4 (Abnormal) | Greater than 0.5 g/dL | Abnormal; further testing required |
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 affect what a positive result means:
- Infants under 12 months may normally excrete higher amounts of carbohydrates in their urine, which can produce a positive result even without an underlying condition.
- Lactosuria during late pregnancy or breastfeeding is a physiological cause of a positive result and is generally benign.
- Medications such as vitamin C, beta-lactam antibiotics, levodopa, and salicylates can cause false positive results unrelated to any metabolic disorder.
How to Maintain Healthy Levels
The following general tips apply to patients managing a diagnosed carbohydrate metabolism condition:
- Follow any dietary restrictions advised by your doctor or specialist, such as a galactose-free diet for galactosaemia
- Avoid high-dose vitamin C supplements before testing, as they may alter results
- Feed infants according to their specific metabolic needs as directed by a paediatric specialist
Lupin Diagnostics Urine Examination For Reducing Substances Price and Home Collection
The urine examination for reducing substances test is available at Lupin Diagnostics starting at ₹120, with home sample collection available across India.
| City | Approximate Price (₹) |
|---|---|
| BHOPAL | 120 |
| CHENNAI | 130 |
| HYDERABAD | 120 |
| KOLKATA | 120 |
| NAVI MUMBAI | 120 |
| PUNE | 150 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
Follow these steps to book the urine examination for the reducing substances test:
- 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
The urine examination for reducing substances test home collection service is available across multiple cities in India. All samples are processed in NABL-accredited laboratories by trained professionals. Your digital report is accessible via email or WhatsApp once ready.
Frequently Asked Questions
The Urine Examination For Reducing Substances Test is a screening test that checks urine for the presence of sugars and other compounds that can reduce copper ions. It is commonly used to screen newborns and infants for inherited conditions affecting carbohydrate metabolism, such as galactosaemia and hereditary fructose intolerance.
Early identification of metabolic disorders is important because untreated conditions like galactosaemia can cause liver damage and developmental problems. Most laboratories include this as a routine check on paediatric urine samples so that any issue can be detected and addressed early.
The dipstick glucose test checks only for glucose. This test detects all reducing substances, including non-glucose sugars. If the dipstick is negative but this test is positive, it suggests that another sugar (such as galactose or fructose) may be present in the urine.
No. This test is a screening tool and is not specific enough to confirm galactosaemia on its own. A positive result requires follow-up testing, such as enzyme assays and genetic testing, to reach a definitive diagnosis.
A positive result needs further investigation. Your doctor will typically arrange additional tests, such as carbohydrate analysis by chromatographic methods, to identify the exact substance present. Consult a paediatrician as soon as possible after receiving a positive result.
Yes. Vitamin C (ascorbic acid), beta-lactam antibiotics (such as cephalosporins and penicillins), levodopa, and salicylates (e.g., aspirin) can cause false positive results. Always inform the laboratory of any medications before giving the sample.
The urine examination for reducing substances test cost at Lupin Diagnostics starts at ₹120. Prices may vary slightly by city. You can check the current price for your location on the Lupin Diagnostics website at the time of booking.
Urine Examination For Reducing Substances: Booking, Price, and Results
