Question

Which of the following would be a normal value for WBCs?

Group of answer choices

250,000/drop

8,000/drop

5,000,000/drop

100,000/drop

none of the above is correct

Answer 1

Option A- 250,000/drop

Usually 20 drops forms one ml.

that is 1 drop -------1/20=.05 ml

Normal value of WBC-4500-11000 cells/ microliter .

that is 4500-11000 cells-------------10^-3 ml

(4.5-11)*10³ cells-----------------10^-3 ml

(4.5-11)*10⁶cells-----------------1 ml

that is One ml of blood have a normal range of (4.5-11)*10⁶cells WBC

so 0.05 ml of Blood have----------------------(4.5-11)*10⁶*5*10^-2=(4.5-11)*10⁴*5

                                                                                                  =(22-55)*10⁴

                                                                                                                                   ^{=2,20,000-5,50,000 WBC /Drop}