rbs (random blood sugar)
DiabetesBlood sampleResults Same dayNo fasting
RBS (Random Blood Sugar)
Measures your blood glucose at any time of day, regardless of when you last ate. A quick check of your current sugar level.
Sample
Blood
Results
Same day
Fasting
Not required
Follow-up
Optional add-on
What this test detects
Random glucose
Hexokinase · plasma
Quantitative · mg/dL
When to get this test
Quick sugar check
Gives a snapshot of your blood sugar at the moment of testing, without needing to fast.
Symptom evaluation
Helpful when you have symptoms such as excessive thirst, frequent urination, or fatigue.
General screening
Can serve as an initial check that may be followed by fasting tests if results are high.
How to prepare
01
No special preparation needed.
Common questions
Do I need to fast for a random blood sugar test?
No. You can take this test at any time, whether or not you have eaten.
Is a random test as accurate as a fasting test?
It is a useful quick check, but high results are often confirmed with a fasting glucose or HbA1c test.