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Blood sugar (glucose)

Measures the glucose in your blood to screen for or monitor diabetes.

General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.

SmartAnswer by DigiNepal SI

Measures the glucose in your blood to screen for or monitor diabetes. What it measures: The amount of glucose (sugar) in your blood, fasting or after food. generated by SI from cited sources · general information, not a diagnosis · consult a health professional

Sources: MedlinePlus (U.S. National Library of Medicine)

What it measures

The amount of glucose (sugar) in your blood, fasting or after food.

Why it is done

To screen for, diagnose or monitor diabetes and low blood sugar.

Preparation

A fasting blood sugar needs 8 hours without food or drink (water is fine); a random test does not.

Sample type

A small blood sample, sometimes a finger-prick.

What results may mean

Persistently high glucose can mean diabetes; very low glucose can be an emergency. Diagnosis needs confirmation and a doctor's review.

⚠️ Reference ranges vary by lab, age and sex — always use the range printed on your own report.

Consult a doctor to interpret results — a single test does not make a diagnosis.

Related conditions

diabetes

Related tests

hba1c

Where to get this near you

🏥 Care near you

Uses your location once to list the nearest facilities. Nothing is stored.

Common questions

Why is Blood sugar (glucose) done?
To screen for, diagnose or monitor diabetes and low blood sugar.

Do I need to prepare or fast for Blood sugar (glucose)?
A fasting blood sugar needs 8 hours without food or drink (water is fine); a random test does not.

What do high or low Blood sugar (glucose) results mean?
Persistently high glucose can mean diabetes; very low glucose can be an emergency. Diagnosis needs confirmation and a doctor's review.

This content includes LOINC® (loinc.org), © Regenstrief Institute, Inc. Used under the LOINC licence. (LOINC: 2345-7)

Sources: MedlinePlus (U.S. National Library of Medicine)

Emergency — call📞 102