Variable Details

Available Studies

ROS, MAP, MARS, Clinical Core, LATC

Scaled? 

Not Scaled

Variable Type 

Longitudinal

Variable Name 

rdw

Categories

Blood Measures

RBC distribution width
Red blood cell distribution width in blood samples

Red blood cell distribution width (RDW) is a measure of the range of variation of red blood cell volume. The variable is measured with a complete blood count performed by Quest Diagnostics. See the routine laboratory tests subcategory description for blood sample collection and analysis procedures.

RDW is expressed as a percentage.

Reference range: 11.0 - 15.0%