Random Blood Sugar (RBS)
RBS measures blood glucose at any time without fasting. Useful for emergency screening and symptomatic patients. Less specific than FBS or PPBS for diagnosis but valuable for quick assessment.
Test Information
Reports In
Same day (6 hours)
Parameters
1
Requisites
Blood Sample
Sample Type
Blood
Measures
Blood glucose at any time regardless of food intake
Identifies
Acute hyperglycemia, emergency diabetes screening
What is the RBS Test?
Random Blood Sugar (RBS) measures glucose at any time of the day, regardless of when you last ate. It's a quick screening test — a value above 200 mg/dL with diabetes symptoms (thirst, frequent urination, weight loss) is diagnostic of diabetes. RBS is particularly useful in emergency settings or when fasting is not practical.
Why Should You Take This Test?
RBS provides immediate glucose information when fasting is not possible. RBS ≥200 mg/dL with symptoms strongly suggests diabetes.
Who Should Get Tested?
Emergency Sugar Check
Quick assessment when fasting is not possible.
Diabetes Symptoms Present
Thirst, frequent urination, weight loss.
Diabetic Patients Feeling Unwell
Check if symptoms are sugar-related.
Routine Screening
Quick screening during an outpatient visit.
Warning Signs — When Should You Get This Test?
Common Conditions Detected
Frequently Booked Together
Tests commonly ordered alongside RBS for a complete picture
FBS
Fasting sugar for definitive diagnosis
HbA1c
Long-term sugar control assessment
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