Medically reviewed by Michael Menna, DOKey TakeawaysThe MCV test measures the size of your red blood cells.A normal MCV for ...

Medically reviewed by Kelly Wood, MDKey TakeawaysThyroid blood tests help figure out how well your thyroid gland is working.TSH helps the thyroid gland know when to make more thyroid hormones. Free T4 ...

A complete blood count (CBC) is a common test to diagnose anemia by measuring red blood cell count, hemoglobin, and hematocrit levels. Iron deficiency is a common cause of anemia, and doctors may ...

What Is a RDW Blood Test? An RDW blood test – also known as a red blood cell distribution width blood test – is a measure of the difference in your red blood cells’ size and volume. RDW is one part of ...

Mild magnesium deficiency may not cause symptoms at first, but an ongoing deficiency can lead to uncomfortable symptoms and ...

High creatinine is a sign that our kidneys are under stress, and are not filtering waste as they should. High creatinine does not always mean damage, but simply means that it requires attention and ...

Doctors can diagnose fatty liver disease, now called metabolic dysfunction-associated steatotic liver disease (MASLD), using blood tests that measure serum liver enzyme levels. Elevated enzyme levels ...

Hemochromatosis is a disorder that causes your body to absorb too much iron. Blood tests that measure iron levels in your blood and liver can help diagnose the condition. The medical disorder ...

A blood osmolality test measures the blood for the concentration of certain dissolved particles. This test can show whether a person has an irregular balance of fluids in their body. Osmolality tests ...

In many cases, it's not until memory problems start creeping up that most people learn they have Alzheimer's disease. By then, the disease may already be progressing, leaving limited options for ...