A random glucose test, also known as a random blood glucose test (RBG test) or a casual blood glucose test (CBG test) is a
glucose test (test of
blood sugar level
Glycaemia, also known as blood sugar level, blood sugar concentration, or blood glucose level is the measure of glucose concentrated in the blood of humans or other animals. Approximately 4 grams of glucose, a simple sugar, is present in the blo ...
) on the blood of a non-
fasting
Fasting is the abstention from eating and sometimes drinking. From a purely physiological context, "fasting" may refer to the metabolic status of a person who has not eaten overnight (see " Breakfast"), or to the metabolic state achieved after co ...
person. This test assumes a recent
meal
A meal is an eating occasion that takes place at a certain time and includes consumption of food. The names used for specific meals in English vary, depending on the speaker's culture, the time of day, or the size of the meal.
Although they c ...
and therefore has higher
reference values
In medicine and health-related fields, a reference range or reference interval is the range or the interval of values that is deemed normal for a physiological measurement in healthy persons (for example, the amount of creatinine in the blood, ...
than the fasting blood glucose (FBG) test.
Most mentions of
capillary blood glucose
Blood glucose monitoring is the use of a glucose meter for testing the concentration of glucose in the blood ( glycemia). Particularly important in diabetes management, a blood glucose test is typically performed by piercing the skin (typically, ...
(CBG) tests refer to random, nonfasting instances thereof, but the real distinction in that term is capillary blood glucose versus venous blood glucose, arterial blood glucose, or interstitial fluid glucose; any fingerstick or optical transdermal glucose test, fasting or nonfasting, measures capillary blood glucose level.
Reference values
The reference values for a "normal" random glucose test in an average adult are 80–140
mg/
dl (4.4–7.8
mmol
The mole, symbol mol, is the unit of amount of substance in the International System of Units (SI). The quantity amount of substance is a measure of how many elementary entities of a given substance are in an object or sample. The mole is defin ...
/l), between 140 and 200
mg/
dl (7.8–11.1
mmol
The mole, symbol mol, is the unit of amount of substance in the International System of Units (SI). The quantity amount of substance is a measure of how many elementary entities of a given substance are in an object or sample. The mole is defin ...
/l) is considered pre-diabetes, and ≥ 200
mg/
dl is considered diabetes according to ADA guidelines
(you should visit your doctor or a clinic for additional tests however as a random glucose of > 160
mg/
dl does not necessarily mean you are diabetic).
See also
*
Blood glucose
Glycaemia, also known as blood sugar level, blood sugar concentration, or blood glucose level is the measure of glucose concentrated in the blood of humans or other animals. Approximately 4 grams of glucose, a simple sugar, is present in the bl ...
*
Diabetes mellitus
Diabetes, also known as diabetes mellitus, is a group of metabolic disorders characterized by a high blood sugar level (hyperglycemia) over a prolonged period of time. Symptoms often include frequent urination, increased thirst and increased ...
*
Hypoglycemia
Hypoglycemia, also called low blood sugar, is a fall in blood sugar to levels below normal, typically below 70 mg/dL (3.9 mmol/L). Whipple's triad is used to properly identify hypoglycemic episodes. It is defined as blood glucose be ...
References
External links
Glucose Tests @ Lab Tests Online
Blood tests
Diabetes-related tests
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