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The Random Blood Sugar (RBS) test measures blood glucose at any time of day, regardless of the last meal. It is the most conven...
Also known as: Random Blood Sugar Test · RBS Test · Random Glucose Test · Casual Blood Glucose Test · Non-Fasting Glucose Test
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*Inclusive of home collection charges
The Random Blood Sugar (RBS) test measures blood glucose at any time of day, regardless of the last meal. It is the most convenient initial glucose test — requiring no fasting or meal timing — and is used when a quick glucose assessment is needed, particularly in patients presenting with classic symptoms of diabetes (excessive thirst, frequent urination, unexplained weight loss) or hypoglycaemia. A random glucose ≥ 200 mg/dL with typical symptoms is sufficient to diagnose diabetes without requiring fasting confirmation. No fasting required.
Key benefits of this package include:
What Does the Glucose — Random Test (RBS) Measure?
| Level / Result | Possible Interpretation |
|---|---|
| 70–139 mg/dL (Normal range, random) | Blood glucose within expected range at this time of day |
| 140–199 mg/dL (Elevated — random) | Elevated glucose — may indicate prediabetes or diabetes, especially if post-meal; FBS and HbA1c recommended for proper assessment |
| ≥ 200 mg/dL with symptoms (Diabetes) | Diabetes diagnosis confirmed with classic symptoms — confirm with FBS or HbA1c; initiate management |
| ≥ 200 mg/dL without symptoms | Significant hyperglycaemia — requires confirmation with FBS ≥ 126 mg/dL or HbA1c ≥ 6.5% on a separate day |
| < 70 mg/dL (Hypoglycaemia) | Low blood glucose — assess symptoms; manage hypoglycaemia; investigate cause |
Important Note: Random blood glucose interpretation depends heavily on timing relative to meals. A glucose of 180 mg/dL taken 90 minutes after a carbohydrate-rich meal in a non-diabetic is within the expected postprandial range. The same value fasting is significantly abnormal. Without knowing the meal timing, random glucose is a screening tool — not a diagnostic one. For definitive diabetes screening, FBS (Test 81) and HbA1c are preferred. All results must be reviewed by a physician.
When Is RBS the Right Test? Random blood glucose is most appropriate when: (1) the patient has classic symptoms of hyperglycaemia and a rapid glucose result is clinically needed — RBS ≥ 200 mg/dL with symptoms diagnoses diabetes without waiting; (2) hypoglycaemia symptoms require immediate glucose confirmation; (3) monitoring glucose in hospitalised or critically ill patients where meal timing is variable; (4) community health screening where standardised fasting is not feasible. For routine preventive screening and definitive diabetes diagnosis in asymptomatic individuals, FBS and HbA1c are superior.
Book once, we handle the rest. Our certified phlebotomist arrives at your doorstep — your report is delivered within 24 hours.
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