A new U.K. study led by the University of Liverpool has examined whether an additional blood test called procalcitonin (PCT) ...

Medically reviewed by Sonal Kumar, MD Irritable bowel syndrome (IBS) is a chronic gastrointestinal disorder that causes ...

Knowing your blood type is more important than you think. Here's why and tips for finding yours before an emergency happens. Macy Meyer is a North Carolina native who graduated from UNC-Chapel ...

This usually involves the immune system attacking blood cells. Doctors call this autoimmune cytopenia, and there are several forms: If the immune system destroys red blood cells (RBCs) faster than ...

To discover how brain cells respond to microgravity, scientists sent tiny clumps of stem-cell derived brain cells called 'organoids' to the International Space Station. Microgravity is known to ...

A red blood cell count is a blood test that your doctor uses to find out how many red blood cells (RBCs) you have. It’s also known as an erythrocyte count. Your hematocrit is the volume of red ...

This is important because hemoglobin is a protein in red blood cells that helps carry oxygen from your lungs to your organs and tissues. Anemia is when you have low hemoglobin levels in your red ...

Mean corpuscular volume, or MCV, measures red blood cell size. A typical adult MCV level is 80 to 100 femtoliters (fl). The above figure comes from a 2024 topic review. A doctor usually requests ...

A hemoglobin test measures the amount of hemoglobin (Hb or Hgb) in your blood. This protein in your red blood cells (RBCs) carries oxygen and carbon dioxide between the lungs and the rest of the body.

Stool exam. You'll be asked for a poop sample ... If you have severe bleeding, the test may find low levels of red blood cells and hemoglobin (a protein in red blood cells).