Chapter 02: Safety in the Hematology Laboratory
1. Which laboratory specimens must be treated with standard precautions?
a. only those labeled with a biohazard sticker
b. only those from patients known to have human immunodeficiency virus (HIV) or
c. all human blood and body fluids
d. all specimens submitted for bacterial culture
All human specimens, whether they are blood, urine, any body fluid, or a specimen submitted
for culture, should be treated identically using standard precautions. Even a patient who
professes to feel well can harbor an infectious agent that has the potential for transmission.
DIF: Cognitive Level: 1 REF: page 9
2. Which of the following procedures is safe from the production of an aerosol mist?
a. removing caps from specimen tubes
b. manual differentials on blood films
c. filling hemocytometers
d. centrifuging uncapped specimens
Manual differentials are performed on a dried film of blood that is fixed and then stained, thus
rendering any infectious agents nonviable. All other procedures mentioned have the risk of
creating an aerosol that may contain viable infectious agents.
DIF: Cognitive Level: 2 REF: page 11
3. Safety training must be provided and documented at the time of initial assignment and how
d. every 5 years
Safety training and education must be documented and should occur on an annual basis once
an employee has undergone initial training at the time of employment. It should also be done
whenever new methods, equipment, or procedures are introduced to the laboratory.
DIF: Cognitive Level: 2 REF: page 13
4. Which of following requires wearing a face shield or eye goggles?
a. drawing blood
b. transporting specimens
c. loading samples on a cap-piercing cell counter
d. cleaning up an acetic acid spill