Page 715 - Clinical Hematology_ Theory _ Procedures ( PDFDrive )

CHAPTER 32 ■ Laboratory Manual: Manual Procedures in Hematology 699

REVIEW QUESTIONS

*Indicates MLT (optional) and MLS advanced content. 7. T e correct re erence value or hemoglobin assay (a ult

emale) is
Hematology Procedures A. 0.15 to 0.3 × 10 /L
9

1. What is the appropriate reagent or the reticulocyte B. 12.0 to 16.0 g/ L

count? C. 4.5 to 5.9 × 10 /L
12
A. New methylene blue D. 22% to 40%

B. Phloxine B

C. Solution lyses erythrocytes an arkens the cells to 8. Te correct re erence value or absolute lymphocyte

be counte (a ult) is

D. 10% HCl solution A. 1.2 to 3.4 × 10 /L
9
B. 12.0 to 16.0 g/ L

2. What is the appropriate proce ure an characteristic or C. 4.5 to 5.9 × 10 /L
12
the Westergren metho ? D. 22% to 40%

A. T e iluting solution lyses erythrocytes with propyl-

ene glycol an contains so ium carbonate an water. 9. T e re erence value or total leukocyte count is

B. Te proce ure measures the rate o erythrocyte A. up to 13 mm/h

settling. B. 2.5% to 6.0%

C. Ferrous ions are oxi ize to the erric state. C. 150 to 450 × 10 /L
9
D. Te iluting solution is either 1% hy rochloric aci D. 4.5 to 11.0 × 10 /L
9
or 2% acetic aci .

10. Te re erence value or PCV (a ult, emale) is

3. What source o error will have greatest e ect on PCV A. up to 13 mm/h

(hematocrit)? B. 2.5% to 6.0%

A. Incorrect ilution o bloo an iluent C. 150 to 450 × 10 /L
9
B. Hemolysis o whole bloo specimen D. 36% to 45%

C. Excessive anticoagulant will pro uce shrinkage o

cells 11. T e re erence value or irect platelet count is

D. Specimen store in ED A or 1 week A. up to 13 mm/h

B. 2.5% to 6.0%

4. In a platelet count, what error will have the greatest C. 150 to 400 × 10 /L
9
e ect on the test result? D. 4.4 to 11.3 × 10 /L
9
A. Re ractile bo ies can pro uce a alse-positive

observation. 12. T e re erence value or the reticulocyte count (newborn

B. Specimens store at room temperature or more in ant) is

than 5 hours will pro uce inaccurate results. A. up to 13 mm/h

C. An ol stain B. 2.5% to 6.5%

D. Incorrect pH o stain C. 150 to 450 × 10 /L
9
D. 36% to 45%

5. In a reticulocyte count, what error will have the greatest

e ect on the test result? 13. Te re erence value or the Westergren ESR metho

A. Re ractile bo ies can pro uce a alse-positive (a ult male over 50 years) is

observation. A. up to 15 mm/h

B. Specimens store at room temperature or more B. 2.5% to 6.0%

than 5 hours will pro uce inaccurate results. C. 150 to 450 × 10 /L
9
C. An ol stain D. 36% to 45%

D. Incorrect pH o stain

14. What clinical or specimen con ition will pro uce an

6. Te correct re erence value or an erythrocyte count increase total leukocyte count?

(a ult male) is A. Active allergies

A. 0.15 to 0.3 × 10 /L B. Imme iate hypersensitivity reactions
9
B. 12.0 to 16.0 g/ L C. In ammation

C. 4.5 to 5.9 × 10 /L D. A lipemic bloo specimen
12
D. 22% to 40%

(continued)