What usually happens next
Call your doctor soon rather than waiting for a routine visit, and the same day if you have heavy thirst, frequent urination, weight loss you can't explain, vomiting or drowsiness.
A result this high is acted on quickly, usually with a treatment plan rather than a wait-and-see.
What a high fasting glucose usually means, and its common causes
When a fasting glucose can read wrong
A fasting glucose only reads true after at least 8 hours without food or caloric drinks. Eating, a recent illness, steroid medicine, a hard workout the day before or a short night can push it up; a sample that sat for hours before it was spun can read lower, because the blood cells keep using the sugar.
Read it with
- Fasting glucose, explained in full
- HbA1c
- Fasting insulin
- HOMA-IR (insulin resistance)
- Prediabetes
- Glucose units converter
Nearby results
Questions
Is a fasting glucose of 250 mg/dL normal?
A fasting glucose of 250 mg/dL is far into the diabetes range. The usual range is 70 to 99 mg/dL after at least 8 hours without food.
What is 250 mg/dL in mmol/L?
13.9 mmol/L. Labs in different countries print Fasting glucose in different units; the meaning is the same.
Is 250 mg/dL fasting glucose bad?
It depends on the band it falls in: under 100 mg/dL is normal, 100 to 125 is prediabetes and 126 or higher is the diabetes range, which a second test confirms.
Can coffee change a fasting glucose?
Black coffee has no sugar, but caffeine can nudge glucose up a little in some people; milk, sugar or syrups mean you weren't fasting.
Worked out by LifeFrom from the ADA Standards of Care, and not yet reviewed by a clinician. For your own understanding: only a lab test, read by your clinician, diagnoses anything.