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RDW-SD is calculated as the width (in fL) of the RBC size distribution histogram at the 20% height level. This parameter is, therefore, not influenced by the average RBC size (mean corpuscular volume, MCV). [7] RDW-CV (expressed in %) is calculated with the following formula: RDW-CV = (1 standard deviation of RBC volume ÷ MCV) × 100%. [8]
The MCV is the size of the red cells and the RDW is a relative measure of the variation in size of the red cell population. Decreased hematocrit levels could indicate life-threatening diseases such as leukemia. [36]
KSFL-TV (as KWSD) shut down its analog signal, over UHF channel 36, on June 12, 2009, the official date on which full-power television stations in the United States transitioned from analog to digital broadcasts under federal mandate.