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What Is RDW in Blood Test? The Hidden Clue Doctors Look For

You glance at your blood test results and notice a string of abbreviations: CBC, MCV, RDW. Some are familiar, but others feel like a secret code. RDW, in particular, sounds technical, but it actually reveals something surprisingly simple about your red blood cells. What Does RDW Mean? RDW stands for Red Cell Distribution Width . It measures how much your red blood cells vary in size. When cells are similar in size, RDW is normal. When there’s a wide mix of big and small cells, RDW goes up. Since healthy red blood cells should stay fairly consistent in size, too much variation can hint at an underlying problem. Why Do Doctors Check RDW in a Blood Test? Doctors rely on RDW to gather clues about different types of anemia and blood-related issues. On its own, RDW doesn’t give a full answer, but it becomes powerful when combined with other CBC numbers. RDW can help with: Identifying iron, folate, or vitamin B12 deficiencies. Distinguishing different types of anemia. P...

What Is MCHC in a Blood Test? The Hidden Clue in Your Red Cells

You get your blood test results back, and instead of answers, you see a wall of letters: MCHC, MCV, RDW. It looks more like code than health information. Among those, MCHC is especially interesting—it’s a small detail that can reveal a lot about how well your blood is doing its job. Let’s unpack what MCHC actually means and why it matters for your health. What Is MCHC in a Blood Test? MCHC stands for Mean Corpuscular Hemoglobin Concentration . In plain English, it measures how much hemoglobin is inside your red blood cells. Hemoglobin is the protein that carries oxygen throughout your body. Red blood cells are like delivery trucks, and hemoglobin is their fuel. MCHC tells doctors whether those trucks are running light or heavy. It’s part of the Complete Blood Count (CBC) , one of the most common lab tests ordered by doctors. Why Does MCHC Matter? Every system in your body depends on oxygen. When red blood cells don’t carry enough of it, you feel the effects fast—fa...