Diabetes Health Data Verified

Continuous Glucose Monitoring Sensor

Published on Jun 21, 2016 and last reviewed on Dec 27, 2021   -  1 min read


The continuous glucose monitoring sensor is an advantageous invention for people whose blood sugar level is not controlled. Learn about this device here.

Continuous Glucose Monitoring Sensor

A continuous glucose monitoring sensor is a comparatively recently introduced system that is very handy and useful in achieving good blood sugar control in patients who are on Insulin injection and for whom the blood sugar is not in proper control are shows a lot of variation. The device is called FreeStyle Libre Pro Flash Glucose Monitoring System.

How to Measure?

How Does it Help?

Cost of the therapy is also not very high. The sensor is only for one use and to be disposed off and the benefits are excellent.

For further clarification regarding better management of blood glucose consult a diabetologist online -->


Frequently Asked Questions


How Does a Continuous Glucose Monitor Sensor Work?

The continuous glucose monitoring (CGM) system is a sensor inserted into the skin to monitor blood glucose levels continuously. This device helps monitor intestinal glucose levels every few minutes.


For Long Can A CGM Sensor Be Used?

A CGM sensor can be used for a long or short duration. A long-duration sensor can be inserted into the skin and removed only by the doctor. The short-duration sensor can be changed at home and can be used for seven to 14 days.


Does a CGM Device Use Needle?

Yes, a CGM device uses a needle. This needle is a minimum of seven millimeters in length. This needle is inserted into the skin and monitors the blood glucose levels.


Which Is More Accurate, CGM or Finger Stick?

A CGM is considered to be more accurate than a finger stick. A CGM helps in the continuous monitoring of blood glucose levels. It is also more convenient to use when compared to a finger stick.


What Is a Libre Sensor?

Libre sensor is also a glucose monitoring sensor. It continuously monitors glucose levels. It gives a report at an interval of 15 minutes. This sensor is attached to the arm using an applicator.


Does Inserting a CGM Hurt?

Inserting a CGM may cause initial discomfort, but it will not cause pain. This initial discomfort may be present till the person gets adjusted to the presence of the new device in the arm. If continuous pain or discomfort is present, it is advisable to remove it and consult a doctor.


What Is a Dexcom Sensor?

A Dexcom sensor is a skin patch that comes with an adhesive. When attached to the skin, it monitors the blood glucose constantly. This patch can be used for up to ten days.


Does Libre Sensor Have Any Side Effects?

Libre sensors may have a few side effects. It might cause local irritation that may lead to redness and itching. It could as well cause bleeding as it is attached to the skin. Sometimes, side effects can also be due to the adhesive behind the patch.


Does the Dexcom Needle Stay In Your Arm?

Yes, the Dexcom needle stays in the arm. This needle is present on the back side of the skin patch. This patch can be applied to the skin with the help of an applicator. While removing, the needle moves into the applicator, and it can be removed easily.


Can the Libre Sensor Be Placed on the Chest?

Yes, the libre chest can be placed on the chest. When placed in the chest, it can give relatively accurate results. The arm and the back are the other sites where the sensor can be placed.

Last reviewed at:
27 Dec 2021  -  1 min read




Comprehensive Medical Second Opinion.Submit your Case

Related Questions & Answers

Does Nicotine gums increase blood sugar levels in a diabetic?

Query: Hi doctor, I am a diabetic. Does chewing nicotine gum will increase sugar level? Does stress in the heart increase the sugar level?  Read Full »

What causes hypoglycemia?

Query: Hi doctor, My mother has been suffering from diabetes for three years. She is 61 years old and weighs 40 kg. She was on Gemer-1. Early morning around 5 AM, she often complains of excessive sweating and weakness. Sweating stops after taking tea, biscuit or sugar. She has stopped taking medication for...  Read Full »

What is the acceptable range for blood glucose levels?

Query: Hello doctor, I have gotten different answers from various different doctors on this question. Maybe, you can give me a straight answer. What is the acceptable range for blood glucose levels? Some people say the lower end is 70 and some others say the lower end is 130. Please explain.  Read Full »

Popular Articles Most Popular Articles

Do you have a question on Blood Sugar Levels or Insulin?

Ask a Doctor Online

* guaranteed answer within 4 hours.

Disclaimer: No content published on this website is intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek advice from your physician or other qualified healthcare providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website. Read our Editorial Process to know how we create content for health articles and queries.