On May 26, 2026, President Donald J. Trump underwent his annual medical examination at Walter Reed National Military Medical Center. This comprehensive preventive evaluation included a thorough review ...

Hemoglobin is a protein in red blood cells. It carries oxygen around your body, delivering it to tissues. Hemoglobin also carries carbon dioxide to the lungs so you can breathe it out. Iron is a part ...

A red cell distribution width (RDW) test is a type of blood test that indicates variations in the size of a person’s red blood cells. It can confirm an anemia diagnosis and help determine its cause.

You may get your blood test results via a patient portal or as a printout at your cancer facility. Some people find it helpful to ask for a copy of their lab results and have a member of their cancer ...

Platelets help stop bleeding by forming clots, which are essential for healing wounds. A normal platelet count is between 150,000 and 450,000 platelets per microliter of blood. Thrombocytopenia, a ...

MCH is the average amount of hemoglobin in each red blood cell, measured as part of a complete blood count (CBC). Different types of anemia are the most common causes of an elevated MCH or a low MCH.

A platelet count measures the average platelet level in a person’s blood. High or low platelet levels can increase the risk of clotting or excessive bleeding. Platelets, also called thrombocytes, are ...

If you’ve ever had a doctor order a blood test for you, chances are that they ran a complete blood count, or CBC. One of the most common blood tests in the world, CBC tests are run billions of times ...

In medicine, a person’s blood-test results are compared with the average range in a population. But results are highly individual and tightly regulated around a person’s own stable values. Changes to ...

Correspondence to Professor Kaili Wu, State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou 510275, China; wukaili{at}mail.sysu.edu.cn Aims To explore ...

Your doctor will usually check your red blood cell count together with your other blood cell counts to look for conditions that cause low counts (anemia) or high counts. Many health conditions can ...