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Reference ranges for WBC, RBC, and Plt counts

*WBC: 4.4-11.0*10^3/mm^3


*Plt: 150-400*10^3/mm^3


*RBC: males=4.50-5.90*10^6/mm^3, females 4.00-5.20*10^6/mm^3

Neubauer counting chamber:


Diagram



*9 primary sq *Center primary sq divided into 25 secondary sq *secondary sq divided into 16 tertiary sq

*9 primary sq *Center primary sq divided into 25 secondary sq *secondary sq divided into 16 tertiary sq

WBC cting area

4+ primary sq (corners) *~9 if WBC ct is really low

RBC cting area

5+ secondary sq (5/25 primary sq)

Plt cting area

10+ secondary sq (10/25 primary sq)

Dilutions used for WBC, RBC,Plt ct



*WBC & plts = 1:100


*RBC = 1:200

Calculate the WBC, RBC, and Plt count

WBC scientific notation & units


RBC scientific notation & units

Plt scientific notation & units

Eos scientific notation & units

Eos ct exception

Indicate when the total automated WBC must be corrected for nrbcs

when nrbcs are greater than or equal to 5 (100 times uncorrected WBC) divided by (100 + nrbc)