RDW is the abbreviation for red blood cell distribution width.. According to Lab Tests Online, RDW calculates the varying sizes of red blood cell (RBC) volume in a blood sample. An RDW test is usually performed as part of a CBC, or complete blood count.t is virtually impossible to discuss the RDW aspect of a blood test without including MCV, or mean corpuscle value. MCV goes hand in hand with red blood cell distribution width (RDW) in terms of anemia and other hematology disorders, and the values of both are influenced by each other.
1 There are various types of heart rate monitors. 2  The most common type features a strap, worn around the chest, and a watch, which displays the heart rate. 3  This type of monitor costs between $30 and $470. Heart rate monitors and the included watches need batteries to operate. 2  The batteries required will vary depending upon the brand of the device. 3  Batteries typically cost less than $10. 4  Expert opinions vary on how to best optimize training using a heart rate monitor.
In addition to the standard EKG, your doctor may recommend other specialized EKG tests, including a holter monitor or a signal-averaged electrocardiogram. A holter monitor is a portable EKG that monitors the electrical activity of a person's heart, generally for one to two days, 24 hours a day. It is most often used when the doctor suspects an abnormal heart rhythm or ischemia (not enough blood flow to the heart muscle).