Quick answer
The Fasting & Post Lunch Urine Sugar Test costs ₹150 at Live Line Health Care. Checks two urine samples, one fasting and one after lunch, for glucose. Overnight fast for the first urine sample, then a second sample 2 hours after lunch. It uses a urine sample and the report is usually ready the same day.
Also known as: Fasting & Post Lunch Urine Sugar, Urine Sugar, Urine Glucose, Urine Sugar Fasting and PP, Glycosuria Test, Urine Sugar Test
What is the Urine Sugar (Fasting & PP) Test?
The Fasting and Post Lunch Urine Sugar test checks two urine samples for glucose: one passed in the morning after an overnight fast, and one passed about 2 hours after lunch. Normally the kidneys filter sugar from the blood and take almost all of it back, so urine contains none. When blood sugar climbs above about 180 mg/dL, the kidneys cannot reabsorb it all and sugar spills into the urine. The lab reports each sample as nil, trace, or plus grades from + to ++++.
Before home glucose meters, urine sugar was a common way to follow diabetes, and many doctors still order it, alongside blood tests, as a simple check. It has clear limits. Urine collects over hours, so it reflects past, not current, sugar. It cannot show low sugar, and a nil result does not rule out diabetes. Some people have sugar in urine with normal blood sugar, as in pregnancy or a kidney trait called renal glycosuria. Diabetes medicines such as dapagliflozin and empagliflozin also make glucose appear in urine on purpose. For diagnosis, blood tests such as fasting sugar and HbA1c are more reliable.
What it measures: Whether glucose is present in a fasting urine sample and in a sample passed after lunch, graded from nil to ++++.
Parameters included (2)
- Fasting Urine Sugar (Nil to ++++)
- Post Lunch Urine Sugar (Nil to ++++)
Why is this test done?
- A simple check of sugar spilling into urine in people with diabetes
- Following up sugar found on a routine urine test
- Antenatal checks when your doctor asks for urine sugar
- Looking for renal glycosuria when urine sugar is positive but blood sugar is normal
- Pairing with fasting and post lunch blood sugar for a fuller picture
When should you get tested?
- Frequent urination and thirst
- Itching or repeated fungal infections in the genital area
- Sugar reported in an earlier routine urine test
- Known diabetes where your doctor wants urine checks
- Pregnancy, when urine sugar is part of your antenatal check
How to prepare for the Urine Sugar (Fasting & PP) Test
- 1Fast overnight and collect the first sample in the morning before eating, in the sterile container given to you.
- 2Eat your usual lunch, then collect the second sample about 2 hours later. Label each container clearly as fasting or post lunch.
- 3Collect a midstream sample: pass the first few drops into the toilet, then fill the container.
- 4Tell staff about diabetes medicines, especially dapagliflozin, empagliflozin or canagliflozin, which raise urine sugar by design.
Urine Sugar (Fasting & PP) Test normal range
| Parameter | Typical reference range |
|---|---|
| Fasting urine sugar | Nil (negative) |
| Post lunch urine sugar | Nil (negative) |
| Reporting grades if present | Trace, +, ++, +++ or ++++more plus signs mean more sugar |
Urine sugar is graded, not measured exactly. Glucose usually appears in urine only when blood sugar has been above about 180 mg/dL, though this limit is lower in pregnancy and varies between people. Ranges are typical adult values and vary between labs, age and sex. Always use the range printed on your report and discuss results with your doctor.
Understanding your results
- Nil in both samples is normal, but it does not rule out diabetes, as blood sugar can be high without reaching the kidney threshold.
- Sugar in the post lunch sample only suggests blood sugar rose high after the meal. A blood test will show how high.
- Sugar in both samples suggests blood sugar is staying high and needs prompt review with blood tests and your doctor.
- Sugar in urine with normal blood sugar may be due to pregnancy, renal glycosuria or SGLT2 inhibitor medicines, and is usually harmless in those cases.
Urine Sugar (Fasting & PP) Test – FAQs
What is the price of the Urine Sugar (Fasting & PP) Test?
The Fasting & Post Lunch Urine Sugar Test costs ₹150 at Live Line Health Care, at all 45 centres and for home sample collection.
Is a urine sugar test as accurate as a blood sugar test?
No. Urine sugar only turns positive after blood sugar crosses the kidney threshold, and it reflects the past few hours, not the moment. It cannot detect low sugar either. Blood tests such as fasting sugar, post lunch sugar and HbA1c are the accurate way to diagnose and monitor diabetes.
What does sugar ++ in urine mean?
The plus signs show roughly how much glucose was found, from trace up to ++++. A result of ++ means a moderate amount, which usually means blood sugar has been well above normal. It should be checked with blood tests. Your doctor will interpret it with your symptoms and medicines.
Can urine sugar be positive with normal blood sugar?
Yes. Pregnancy lowers the kidney threshold for sugar, and some people have an inherited condition called renal glycosuria. SGLT2 inhibitor medicines for diabetes also make sugar pass into urine. In these cases, a positive result is expected and is not a sign of poor control.
Why do some diabetes tablets cause sugar in urine?
Medicines such as dapagliflozin and empagliflozin work by making the kidneys pass extra glucose into urine, which lowers blood sugar. People on them will almost always have urine sugar, even when control is good. For them, this test is not useful for monitoring, and blood tests are used instead.
How should I collect the two urine samples?
Collect the first sample in the morning before eating, and the second about 2 hours after lunch. Use the sterile containers given to you, pass the first few drops into the toilet, then fill the container. Label each one clearly and hand it over as soon as you can.
Should I choose urine sugar or blood sugar tests?
For diagnosing or tracking diabetes, blood tests are preferred. Urine sugar is a simple added check that some doctors still order, especially alongside blood sugar. If your doctor has asked for both, book both. If you are unsure, the fasting and post lunch blood sugar test is usually more useful.
Where can I get the Urine Sugar (Fasting & PP) Test done?
At any of our 45 Live Line Health Care centres in 40 cities across Andhra Pradesh and Telangana, including Hyderabad, Visakhapatnam, Warangal, Kakinada and Nellore, or book home sample collection.
Medical disclaimer: This information is for general awareness only and is not a substitute for professional medical advice. Please consult a qualified doctor to interpret your results and before starting or changing any treatment.