Written by Bina Naik | 
Medically Reviewed by dr. reeja tharu / dr. sunil shroff, MBBS, MS, FRCS (UK), D. Urol (Lond) on Dec 14, 2019

What is the Ideal Time to Check the Blood Glucose Level?

For people with diabetes: The timing of the test should be either before or after a meal. It is generally recommended that the test be done before breakfast, lunch or dinner or they should be done two hours after breakfast, lunch or dinner.

During pregnancy: The timing of test again can be either before breakfast, lunch or dinner; however, post-meal readings should be taken - 1-1.5 hours after food.

In some cases midnight blood glucose may be required to be checked.

The ideal blood glucose level control should be as follows:

Fasting or Level Excellent Control Good Control Fair Control Poor Control
Fasting or Level Before a Meal 60-100 100-140 140-180 Over 180
Fasting or Level After a Meal 110-140 140-180 180-220 Over 220

Glucose level mentioned in blood are in mg/dl. To convert mmol/litre into mg/dl (milligrams per deci-litre) the value should be multiplied by 18 (eg. 10 mmol/dl is same as 180mg/dl)


  1. Self-monitoring Blood Glucose (SMBG): Now and the Future -Amber L. Briggs,Journal of Pharmacy Practice, Vol. 17, No. 1, 29-38 (2004)
  2. Heagarty, Margaret C. Life-style change: a difficult challenge. Pediatrics. 1976; 58:314-5.

Do you wish to consult Diabetologist for your problem? Ask your question


chams Sunday, August 26, 2012

my blood sugar level was 78fasting,and 157 on pp.but after taking glimpride and metformin it came too 80 fasting and 104 on pp.can i control my sugar level with healty lifestyle and cotroled diet?

rjames Friday, May 11, 2012

after lunch I often work in the yard for l to 2 hrs and take my test when I come in. Does moving around after a meal increase the sugar in my blood more than sitting for the 2 hours?

mouna Thursday, May 17, 2012

any physical activity you perform will contribute to lowering your blood sugar level.

tafitz08 Friday, March 2, 2012

Where can I find a blank chart I can print off to keep track of my sugar levels?

naving Sunday, November 20, 2011

my blood sugar level before meal is below 100. do i have to chech post meal reading after 2 hrs to know whether i have diabetics or not. navin

michelledale Friday, February 12, 2010

Can anyone please tell me what are the normal sugar levels in a type 2 diabetes, as my husband and I are having problems monitoring him.

guest Monday, August 9, 2010

When Target levels
Before meals 70 to 140
1 to 2 hours after the start of a meal below 180

you have to monitor BG level frequently.

Have you using Blood Glucose Meter for Monitoring?

Rajesh Kumar

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