Correct time to check Fasting BSL

Hello guys,

I'm a bit confused. I've searched many places but could not find a definitive answer. I'll be very happy if you could guide me.

I normally get up at 5:30 in the morning, go for a 30 minutes walk. After coming home, before morning cup of tea i check my fasting BSL.

Is this a correct procedure? or i need to change it?

Thanks for guiding me.

Best regards,


10 Replies

  • 10 hrs is usual, before any walk and before any thing except water.

  • As Anup mentioned, minimum 10 Hrs.. Don't eat anything without any exercise and walking.. Exercise and walking may show less readings.. !!

  • Check FBS ASAP when you wake up.

  • What is mean by ASAP?

  • As soon as possible.

  • Thank you Anup, pnglr, shrisamarth. I was doing wrong.....I'll start doing the test again this way.....

  • Check the reading as soon as you can once you are awake. It has been my experience that if I wake up in the middle of the night and then go back to sleep a little later, my FBS reading is a bit higher than when I wake up after a sleep without interruptions.

    Another suggestion to you is don't start your day with a cup of tea alone. I know it is a standard practice among most people in India to start off with a cup of tea or coffee. Start the day with a small apple or pear then go for your walk. Upon return from the walk you can eat your breakfast and then have your tea. Bottom line don't have tea or coffee on an empty stomach.

  • Fasting blood sugar test. A blood sample will be taken after you fast for at least eight hours or overnight. Under these conditions, a blood sugar level lower than 100 milligrams per deciliter (mg/dL) — 5.6 millimoles per liter (mmol/L) — is normal.

    A blood sugar level from 100 to 125 mg/dL (5.6 to 6.9 mmol/L) is considered prediabetes. This is sometimes referred to as impaired fasting glucose (IFG). A blood sugar level of 126 mg/dL (7.0 mmol/L) or higher may indicate diabetes mellitus.

  • "Fasting Plasma Glucose Test

    The FPG test is used to detect diabetes and prediabetes. The FPG test has been the most common test used for diagnosing diabetes because it is more convenient than the OGTT and less expensive. The FPG test measures blood glucose in a person who has fasted for at least 8 hours and is most reliable when given in the morning.

    People with a fasting glucose level of 100 to 125 mg/dL have impaired fasting glucose (IFG), or prediabetes. A level of 126 mg/dL or above, confirmed by repeating the test on another day, means a person has diabetes."

  • Thank you Shailp and Klra01948

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