Diabetes Mellitus:- Part 9 – Glucose Random (Diabetes mellitus)

Glucose Random

Sample

• This is a random blood sample done on the serum or oxalate blood.

Random glucose level depends upon

1. When and how much you eat at your last meal.
2. This is the rough estimate of glucose level.

Pathophysiology

1. Random blood glucose is without any relation to time or food.
   1. This is done out of your normal routine testing.
   2. This is always a nonfasting sample.
2. Interpretation:
   1. If it is above 200 mg/dL and the patient has increased thirst, polyuria, and polyphagia, the random blood glucose suggests diabetes mellitus.
   2. As a rule, two-hour glucose samples will reach the fasting level or be in the normal range.
      

      Postprandial (glucose 2 hours) presentation

Normal

1. Random blood sample:
   1. Before the meal is 80 to 120 mg/dl (4.4 to 6.6 mmol/L).
   2. After the meal and if the person is awake, 100 to 140 mg/dl ( 5.5 to 7.7 mmol/L ).
   3. At bedtime also maybe 100 to 140 mg/dl ( 5.5 to 7.7 mmol/L).
2. Normal Random glucose level between 80 to 140 mg/dL (4.4 to 7.8 mmol/L).
3. Reliability of random blood glucose: If it is above 200 mg/dL, it indicates diabetes.
   

   The glucose level in various conditions

Interpretation of the fasting and random glucose level:

The glucose level in prediabetic and diabetes mellitus:

• Please see the details in the Fasting glucose level.