Understanding the A1C Test: What It Measures and Why It Matters
The A1C level—also called HbA1c—refers to glucose-modified hemoglobin. Hemoglobin is the protein inside red blood cells that carries oxygen throughout the body. When glucose circulates in the bloodstream, some of it naturally attaches to hemoglobin, creating HbA1c. Because red blood cells circulate for several months, the A1C test provides a long-term snapshot of average blood […]
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