Platelet calculations - 1
Formulas for Plt calculations in #plts/mm3:
Plt’s
= (#Plts/25 “R” sections)(DCF)(VCF)
Example:
Following
counts obtained in 25 “R” sections both sides:
Side
#1 = 260
Must not vary
by more than 10%
AVG /25”R” = 250
Side
#2 = 240
Plt
= (#Plts/25 “R” sections)(DCF)(VCF)
DCF
= 100
VCF
= 10
Plt
= (250)(100)(10)
Plt
= 250,000/mm3
Plt =250 x 109/L