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.


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

Most Popular on Medindia