Continuous Glucose Monitoring in Sharjah
Medically reviewed by Dar Al Kamal Team
What is continuous glucose monitoring?
Continuous glucose monitoring (CGM) is a method of measuring glucose around the clock using a sensor with a tiny flexible filament that sits just under the skin. The filament measures sugar in the fluid between the cells, called interstitial fluid, and sends a reading to a reader or smartphone every few minutes.
Where a finger-prick gives a single snapshot, continuous glucose monitoring gives a moving picture. The report shows what happens after each meal, during exercise, overnight and on working days compared with weekends. Arrows on the screen show whether sugar is rising or falling and how quickly.
Continuous glucose monitoring at Dar Al Kamal Hospital, Sharjah is fitted and interpreted by the endocrinology team. Two approaches are used:
| Approach | How it works |
|---|---|
| Personal CGM | You see your readings live and can set alarms for high and low sugar |
| Diagnostic (masked) CGM | The sensor records for a set period, often with readings hidden, and the team reviews the full record afterwards |
Who needs it
Continuous glucose monitoring helps people who:
- live with type 1 diabetes or use several insulin injections a day;
- have low sugar episodes, especially at night, or have lost the usual warning signs of a low;
- have an HbA1c result that looks at odds with their finger-prick readings;
- are starting or adjusting insulin therapy;
- work in jobs where a sudden low is dangerous, such as driving or working at height;
- are planning a pregnancy with diabetes;
- want to fast in Ramadan and need a clear picture of their sugar through the fasting hours.
What happens
Fitting the sensor takes a single appointment. The usual site is the back of the upper arm, and some sensors are worn on the abdomen. The skin is cleaned and dried, and an applicator places the sensor with a quick press; the needle that guides the filament in is withdrawn, leaving only the soft filament under the skin.
A short warm-up period follows before readings begin. You are shown how to scan or pair the sensor, read the trend arrows, set alarm levels and share the data with the clinic.
At review, the team reads a standard summary report, which includes:
- Time in range: the share of the day your glucose spends within your target band.
- Time below range: how often and when sugar drops too low.
- Glucose variability: how much readings swing across the day.
- Daily pattern: overlaid days that reveal repeating highs after certain meals or lows at certain times.
These patterns guide changes to meals, activity and medicines, and the report is often clearer than HbA1c at showing exactly where a problem lies.
Preparing for it
Bring your Emirates ID, insurance card and a list of your medicines and supplements, since high doses of some supplements, such as vitamin C, can affect certain sensors. If you plan to use your phone as the reader, check that it is charged and bring it along so the team can set up the app with you.
Wear a loose short-sleeved top so the back of your arm is easy to reach. Avoid moisturiser on the skin that day, because it weakens the adhesive. If you have a scan booked, such as an MRI, CT or X-ray, tell the team, as sensors are usually removed before these scans.
Afterwards
The sensor stays on through daily life, including showering and swimming within the limits in its leaflet. Keep a short note of meals, exercise and any symptoms, so the report can be matched to what you were doing.
In the Sharjah heat, sweat can loosen the adhesive. An over-patch helps keep the sensor secure, and applying it to clean, dry skin in a cool room gives the best hold. At the end of its wear time, peel the sensor off slowly and dispose of it as advised.
Check with a finger-prick whenever your symptoms and the sensor reading disagree, and before treating a low if the reading seems unexpected.
Contact the hospital if the sensor site becomes red, hot, swollen or painful, or if alarms show repeated lows. **Go to the emergency department straight away for a low sugar episode with confusion, seizure or loss of consciousness.**
Cost and insurance
Coverage for continuous glucose monitoring varies widely between UAE insurance plans. Many plans cover sensors for people with type 1 diabetes or on multiple daily insulin injections, often with pre-approval and a letter from the doctor, while others exclude them or limit the number of sensors per year. A diagnostic, clinic-led CGM period may be covered differently from personal sensors. Dar Al Kamal Hospital, Sharjah can help you check cover on 06 599 7777.
Related services
Frequently asked questions
What are the risks and limits of continuous glucose monitoring?
Continuous glucose monitoring carries small risks such as skin irritation or a reaction to the adhesive, bleeding at the insertion site and, rarely, infection. Sensor readings lag a few minutes behind blood glucose, so they can differ from a finger-prick when sugar is changing quickly, and some sensors can be affected by certain medicines or supplements. A finger-prick check is still needed when symptoms and the sensor disagree.
Does inserting a glucose sensor hurt?
Inserting a glucose sensor is usually quick and causes only brief, mild discomfort, similar to a finger-prick. Only a soft filament stays under the skin, held flat against the skin by the adhesive patch.
Does continuous glucose monitoring replace finger-prick tests?
Continuous glucose monitoring replaces most routine finger-prick tests for many people, but a finger-prick is still used to confirm a reading that seems wrong, when symptoms do not match the sensor, and during the sensor warm-up period.
Can I shower, swim or exercise with a glucose sensor?
Most glucose sensors can be worn in the shower, while swimming and during exercise, within the depth and time limits in the sensor's leaflet. In hot weather, an over-patch helps stop sweat from lifting the adhesive.
What is time in range?
Time in range is the share of the day that your glucose stays within a target band agreed with your doctor. It is a key measure on a continuous glucose monitoring report, and increasing time in range while keeping lows to a minimum is a common goal of treatment.
Is continuous glucose monitoring useful if I have type 2 diabetes?
Continuous glucose monitoring can be useful in type 2 diabetes, especially for people on insulin, those with unexplained lows, or those whose HbA1c and home readings do not match. A short diagnostic period can also show how food and activity affect sugar.
Do I need to remove the sensor for scans or airport security?
Glucose sensors are usually removed before MRI, CT and X-ray scans, so tell the imaging team you wear one. At airport security, sensors can normally pass through, but follow the manufacturer's advice on body scanners and carry a note from your doctor when travelling.
Departments
Book an appointment
Tell us your preferred day and time. Our team calls you back to confirm.