Nutrition
Hemoglobin A1C Test
The hemoglobin A1C test reflects average glucose over about three months—central for type 2 monitoring when paired with clinician targets and trend review.
The hemoglobin A1C test measures average blood glucose over roughly three months by tracking sugar attached to red blood cells. It is a standard marker for type 2 diabetes management and prediabetes screening—single fasting glucose misses day-to-day swings.
Targets differ by age, pregnancy, and clinician guidance; trends matter more than one point.
Common questions
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How often should you check A1C with type 2 diabetes?
Many adults test every three to six months when stable, or more often when therapy changes—follow your clinician's schedule rather than home guessing.
Related terms
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