Exam 37: Hematology Procedures

All of the following are needed on a phlebotomist's supply tray to perform a venipuncture except:

The microscopic examination of a Wright-stained blood smear revealed bright red erythrocytes and pale leukocyte nuclei.What is the best explanation for this appearance?

Name the cytochemical stains that are typically used in the workup of the following and how they are used to differentiate these conditions: a.AML-myelomonocytic b.APL c.ALL d.AML-Monoblastic e.AML-Erythroid

A laboratory professional is reviewing differentials and notices that the last few smears appear blue.What can be done to correct this?

In phase contrast microscopy,the function of the phase ring is to:

A patient's osmotic fragility test results show beginning hemolysis at 0.40% NaCl and complete hemolysis at 0.20% NaCl.Increased numbers of which erythrocyte morphology are associated with these findings?

Which of the following receptacles is most appropriate when disposing of used needles?

The following erythrocyte data were obtained from an EDTA-anticoagulated sample: erythrocyte count = 3.92 × 10₁₂ /L,hemoglobin = 11.4 g/dL,and hematocrit = 34 % (.34 L/L).Calculate the MCHC.

What is the anticoagulant in the most commonly utilized tube in hematology,and how does it prevent coagulation from taking place?

An instrument printout reports a WBC count of 18 × 10⁹/L.The technologist notes 44 nucleated red blood cells.What is the corrected WBC count?

In the chloroacetate esterase procedure,which reagent component undergoes color change because of the enzyme's activity?

A clinical laboratory professional performs a manual reticulocyte count using the Miller disk and observes 83 reticulocytes (square A)in 214 erythrocytes (square B).Which of the following conditions is associated with this reticulocyte count?

Which laboratory test is useful in the differential diagnosis of polycythemia?

A clinical laboratory professional observes numerous smudge cells on a Wright-stained blood smear and experiences difficulty performing the 100-cell differential.What should be done to obtain an accurate differential?

Brilliant green is used as the stain of choice for Heinz body preparation because of:

The function of a microscope's condenser is to:

Which of the following is not mandated by OSHA?

A patient had the following results: RBC 2.45 × 10¹²/L MCV 90 fL Hb 7.5 g/dL MCH 31 pg Hct 22.0 % MCHC 34 g/dL DAT negative Haptoglobin 10 mg/dL (Reference range: 35-164 for males and 40-175 for females) Which is the most appropriate reflex test?

An instrument printout reports a platelet count of 85 × 10⁹/L.The technologist reviewing the peripheral blood smears notices aggregates of platelets around many of the neutrophils.What is the best way to correct this problem?

A patient is about to begin a regimen of chemotherapy,and his attending has ordered a battery of lab tests including comprehensive chemistry metabolic panel,complete blood count,coagulation studies,amylase and lipase,hemoglobin A1C,lipid panel,thyroid panel,PSA,rubella IgG,HIV,and syphilis.Five tiger-top tubes,2 light blue-top tubes,and 2 lavender-top tubes are needed.Correlate each test to the appropriate tube,and indicate the correct order of draw for the tubes.