
What Should Fasting Blood Sugar Be In The Morning?

Can he make fasting blood sugar after any 8 fasting hours through the day or it must be after waking up ?
Also can a non diabetic has the XXXXXXX phenomenon syndrome ?
He ask this because his fasting blood sugar after waking up was 103 & when he did another one after also 8 hours but the test time was at afternoon it was 85 .
So is that normal ?
Thanks
Blood glucose
Detailed Answer:
Blood glucose regulation is a complex scientific process. It has multiple biochemical pathways to ensure blood glucose levels are maintained in the normal range of 65 to 99 after an overnight fast as well as before the next major.
So if nothing was consumed after breakfast for several hours all the way until lunch time , the body tends to keep the before-lunch reading also close to normal just like in the fasting state ie 65 to 99 mg/dl
The XXXXXXX phenomenon does not occur in a non diabetic exactly as it does in a diabetic. The comparison is not valid because one is a 'dysregulated' metabolic state ie diabetes in which glucose metabolism is altered to an abnormal level.
But I probably understand your point. 'Counter-regulatory' hormones such as Growth hormone and cortisol , do tend to have their maximal effect of raising blood glucose levels in the wee hours of the morning and this is primarily responsible for the XXXXXXX effect.
In normal humans too, these hormones do surge in the early morning hours. However in those with normal glucose metabolism such as those without diabetes, this tendency is counter-acted by a compensatory increase in insulin secretion to ultimately keep the blood glucose levels in the normal range.
Individuals with diabetes have either an insulin secretory defect or their insulin does not work properly ('insulin resistance') and therefore they tend to experience a rise in blood glucose levels at this time in the morning.


Pls note that he did 2 samples after waking up & it was 90 & 92.
2 hours post meal reading was 85
3 hours post meal reading was 75
Do he has to concern .
Follow up
Detailed Answer:
Yes these values can be perfectly normal.

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