Sugar (Glucose) Random
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Measures blood sugar levels to diagnose diabetes
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🧪 What is Random Blood Glucose?
Random Blood Glucose measures the concentration of glucose in the blood at any time of the day, regardless of the last meal. It helps to assess blood sugar levels without the need for fasting.
❓ Why is the Test Done?
To:
- Screen for diabetes mellitus in symptomatic or high-risk individuals
- Monitor glucose control in known diabetic patients
- Evaluate symptoms such as polyuria, polydipsia, unexplained weight loss
- Provide rapid assessment when fasting samples are not feasible
📊 Normal Range
Random Blood Glucose Level | Interpretation |
|---|---|
< 140 mg/dL | Normal |
≥ 200 mg/dL | Suggestive of diabetes mellitus (with symptoms) |
📈 Interpretation of Results
Result | Clinical Significance |
|---|---|
Normal RBG | No evidence of hyperglycemia |
High RBG (≥200 mg/dL) | Suggests diabetes, especially with symptoms |
Borderline values | May require further testing (Fasting glucose, HbA1c) |
🧠 Associated Conditions
Condition | Details |
|---|---|
Diabetes mellitus | Chronic hyperglycemia due to insulin deficiency or resistance |
Stress hyperglycemia | Transient elevation during acute illness |
Hypoglycemia | Rarely detected on random glucose, needs fasting |
🔄 Related / Follow-Up Tests
- Fasting Blood Glucose
- HbA1c (Glycated Hemoglobin)
- Oral Glucose Tolerance Test (OGTT)
- Serum insulin levels
✅ Fasting Required?
Test | Fasting Required |
|---|---|
Random Blood Glucose | ❌ No |
📝 Summary Table
Parameter | Details |
|---|---|
What | Blood glucose measured at any time without fasting |
Why | Screen and monitor diabetes mellitus |
Normal Range | < 140 mg/dL |
High Range | ≥ 200 mg/dL (suggestive of diabetes with symptoms) |
Associated Conditions | Diabetes mellitus, stress hyperglycemia |
Follow-up Tests | Fasting glucose, HbA1c, OGTT |
Fasting Required | ❌ No |
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