A high hemoglobin A1C, or A1C, shows your body has difficulty regulating glucose levels. When your A1C is too high, you are at greater risk of diabetes complications such as kidney disease ...

MCH that's lower or higher than normal may indicate you have a condition such as anemia or high cholesterol. Hemoglobin is a protein that carries oxygen from the lungs to different cells ...

Hemoglobin is essential for carrying oxygen in the blood, and low levels can lead to anemia, fatigue, and weakness. Here are ...