This was a hemoglobin A1C result ?
The hemoglobin A1C is normal to be below 5.7 but 5.8 is not that bad !!
You may be at risk to develop diabetes later down the road but A1C 5.8 is not diabetic range ...
It is not so reliant as to fasting/ nonfasting in that test however as it is a 3 month average ...it tests how high concentration of glucose chemically binds to the hemoglobin in your blood ....at 6.0 that means average random blood sugar has been about 120mg/ dL ( over time -- both fasting and nonfasting )
So healthy habits are advised ...
Absolutely no reason to panic with that borderline value ..
Take Care of yourself / exercise / control your weight / eat healthy / recheck in 6 months is what we would recommend ..
I hope that this information is helpful for you
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Thank you and Best Regards,
Anthony Bray MD