Is a blood sugar of 130 after eating normal?
Yes. 130 mg/dL (7.2 mmol/L) is under 140, the lab's line for 2 hours after a glucose drink. After an ordinary meal it's a rough check, and this one is fine.
Under 140140 to 199200 or more
What it means
The official line comes from a lab test: 2 hours after a 75 g glucose drink, under 140 mg/dL (7.8 mmol/L) is normal, 140 to 199 (7.8 to 11.0) is the prediabetes range, and 200 (11.1) or more is the diabetes range. An ordinary meal isn't that drink, so a home number after a meal is a rough check. At 1 hour, or on a sensor, there's no band: healthy people spent about 30 minutes a day above 140 in one study and about 3 hours in another.
Can this number decide it?
Only a lab test decides a band, and a diagnosis takes two results unless the number is clearly high. A finger-stick meter or a sensor can't diagnose, and a sensor runs higher than your blood.
What to do
Nothing to do for this number. Test every 3 years from age 35, sooner if your weight goes up, and yearly once a number lands in the prediabetes range.
When to get help now
Call 911 or go to the ER if a blood sugar stays at 300 or more, or comes with vomiting so you can't keep fluids down, fruity breath or hard breathing. Under 70 with confusion, fainting or trouble swallowing is an emergency too. Pregnancy uses tighter numbers, so take any number to your midwife or doctor, and if you take insulin or a sulfonylurea, your targets come from your prescriber.
