You suspect your blood sugar is getting higher or your family has been nagging you to get your blood sugar checked.

Or maybe you just need to know whether your blood sugar levels are healthy.


So, when to test blood sugar ?

Should you test early in the morning while fasting ? Or at just any time you can find ?

Testing blood sugar is actually a very simple and quick task. Don’t let your friends’ horror stories scare you. You can get a blood sugar monitor and do it yourself at home, or you can hop into your local pharmacy or doctor’s office to do a quick test .


Do not test sugar levels with a urine glucose test, where you just dip the test strip into your urineIt is a very primitive and outdated method which is totally not accurate. It cannot tell you if you have borderline diabetes and only gives results when your blood sugar is super high. If you test negative on the urine glucose test , this does NOT mean you are diabetic-free.


Testing Blood Sugar Yourself

These are the simple steps you go through when you test your blood sugar :

When To Test Blood Sugar

  1. You just prick your finger with a tiny tiny needle (trust me, its really tiny)
  2. You squeeze out a very small amount of blood (just a small drop will do)
  3. You place your blood on the blood sugar monitor
  4. The monitor displays your sugar levels
  5. and you are done.

See, it is not as scary as it sounds.

You will get your results almost immediately as most meters only take a maximum of 5 seconds to show you your results.

You don’t have to wait for weeks anxiously to get your results.

And if you do it at home , nobody would even know your results but yourself!


When To Test Blood Sugar

when to test blood sugar

Many old doctors and nurses still recommend testing your blood sugar levels only in the morning after fasting for at least 8 hours.

This practice has long been outdated as many people nowadays do not know that they are borderline diabetic. Their blood sugar spikes up dangerously after a meal and then settles down to a normal level after fasting.

Or some patients intentionally fast longer that they should right before their health check just to pass the results.


The best time to test your blood sugar (glucose) is with a combination of both :

1. Fasting (5-8 hours without food)


2. Postprandial (2 hours after a normal meal)


You can do a test before your meal, and another test 2 hours after your meal to see how high the blood sugar spikes up to.

IMPORTANT :  Please write down or keep a diary of your blood sugar readings . It will be much easier for the doctor or your pharmacist to counsel you. It is also great for personal monitoring.

A simple recording of home blood sugar monitoring requires :

  • Date
  • Time
  • Glucose Levels
  • Remarks


Blood Sugar Test Results – How To Know If You Are A Diabetic

[Every country have slightly different guidelines and target glucose (sugar) levels]

For fasting glucose, a good result would be below 6.0mmol/L

For postprandial (2 hours after a meal) , your blood glucose should be below 9.0mmol/L.

Please refer to the chart here :

when to test blood sugar

Reference : Diabetes Organization UK

Example :

After taking a meal, if your blood glucose is 12.0 mmol/L means that you may have diabetes. A reading of 7.5 mmol/L means you don’t have diabetes.

Home Blood Glucose Monitors

I scouted out some good quality and really easy to use Blood Sugar Monitors here.

Bayer Contour, Accu-chek and One Touch are the top 3 blood sugar monitor companies worldwide. They have been around a long time and their meters and strips are of great quality.

My 6 criteria for choosing a good glucose monitor is :

  1. Easy to use
  2. Require very little blood to test
  3. As little pain as possible
  4. Reliable brand
  5. Refill strips are available to purchase anywhere (Amazon and local pharmacies )
  6. Fast results

All 3 models I have chosen here fits into my 6 criteria.

My Advice

Don’t procrastinate ! Just get yourself tested regularly. To know is better that not to know, and nothing is worst than not doing anything about it.

If you have higher than normal blood glucose levels, don’t think that its the end of the world. It is good that you knew early , as diabetes can be prevented and controlled at the early stage.

Make some lifestyle changes in your food intake and your exercise levels if you are worried. You can also take some supplements to control your blood sugar levels.

If you have extremely high blood sugar levels, you need to see a doctor right away and do something about it . Don’t keep making excuses for yourself.

[ MEDICAL DISCLAIMER : The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician regarding a medical condition.]

when to test blood sugar
Please comment in the comment box below if you have any questions or comments regarding testing your blood sugar levels.

Jacky Kong
Jacky Kong

Health Blogger

    2 replies to "When To Test Blood Sugar"

    • Melinda

      This is interesting. My sister has diabetes. She always tested her blood when she felt shaky. She also tested prior to eating.

      • Jacky Kong

        Hi Melinda,
        Traditionally, diabetics had been advised only to test it before eating. However, testing 2 hours after a meal also allows us to know how well digested a particular type of food is to our body. If it is higher than usual, then we will know to avoid that particular type of food. If you don’t mind, please forward this article to your sister, so she will have a better understanding of the new standards in blood sugar monitoring and her own diabetic level.


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