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Contradicting BLOOD GLUCOSE in different times. Is this normal?

Resolved Question:

I started checking my glucose levels every morning to see if I have diabetes.

I checked this morning and got 115 then tried another strip and prick and got 90.

I've been getting contradicting numbers about twice a week, seconds apart.

Is this normal? Kinda makes me think this stuff isn't working (2nd meter/strips, different brand)

Category: Family Physician-GP

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Dr. Jaydeep Tripathy
Category: HIV- AIDS Specialist
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 29 Doctors Online

Expert:  Dr. Jaydeep Tripathy
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Hello,
Thank you for your query at DoctorSpring.com
I understand your concern.
No, the blood glucose definitely does not vary in seconds.
If there is an interval of 20-30 minutes it can alter, but not in seconds.
What was the gap between the values of 115 and 90?
It is better to get one single FBS/PPBS evaluated and more importantly HBA1c level checked, which will predict the control over the past 3 months.
Feel free to discuss further,
Regards.

Dr. Jaydeep Tripathy
Category: HIV- AIDS Specialist
Experience: 
MBBS from Sri Ramachandra University in December 2011
M.Med (Family Medicine) - TNMGR University, Chennai
MBA-MPH in Public Health in March 2016, SRM University
Finished AFIH in March 2016, SRM University
MRCP ( UK ), Internal Medicine, Royal College of Physicians, June 2016
Fellowship in Diabetology from Martin Luther University in January 2017

Currently Resident Physician, in MD Radiodiagnosis - Kamakshi Memorial Hospital, Chennai
Dr. Jaydeep Tripathy and 4 other Medical Specialists are ready to help you

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