Hematology 1 Flashcards
(69 cards)
the morphology of blood cells is important to evaluate
a. Every time a complete blood count (CBC) is requested on a patient
b. When an instrument-generated flag is obtained
c. When flag limits established by clinical laboratory scientists in the laboratory are exceeded
d. When the white count is elevated
when flag limits established by medical laboratory scientists
what cellular structures appear as granules with Wright stain
a. Ribosomes
b. golgi bodies
c. Mitochondria
d. Lysosomes
lysosomes
Proper specimen collection and patient satisfaction are components of
A) Reliability
B) Quality assurance
C) Quality control
D) Precision
Quality assurance
which of the following would most likely be associated with causing a shift in quality control for only one analyte
starting a new lot number of thromboplastin reagent
which of the following can be evaluated only through the microscopic examination of a stained blood film
presence or absence of cytoplasmic inclusions
The SD for this hemoglobin method was calculated in question 18. A delta check was obtained on day 2. Controls were run as appropriate each day and were all within limits for this procedure
may represent an error in patient identification
a clinical laboratory scientist preforms 30 replicate hemoglobin determinations on a single blood sample. When statistics are used to determine the precision of the method, the mean is 13.8 g/dL and 1 SD is 0.1g/dL. This means that 95.5% of the results on this specimen lie
between 13.6 and 14.0 g/dL
which of the following procedures is safe form the production of an aerosol mist
manual differentials on blood films
the best way to prevent errors in the laboratory is to
hire only well trained conscientious worker
a 10% solution of household bleach is used to clean contaminated surfaces in the clinical laboratory this 10% solution should be prepared
daily
the primary function of a platelets is to
facilitate blood clotting
which of the following is true regarding reference ranges
are ranges of values for an analyte in normal healthy people
which of the following is acceptable safe practice
Disposing of used glass slides in sharps container
the antinuclear antibody test is positive is almost all people who have systemic lupus erythematosus it is also positive in some patients who do not have SLE. the ant deoxyribonucleic acid test is positive only in people with SLE but not in all who do which of the following is true
the ANA test is a good screening test and the anti DNA test is a good confirmatory test
what is the most frequent cause of a needle puncture or puncture from another sharp object
improper disposal of needle
what component of the erythrocyte is most responsible for its cytoskeleton and cellular integrity
cytoskeletal protein
if the lysosomal membrane ruptures, what is the consequence to the cell
damages internal cell structures
what cellular component “directs traffic” for smooth functioning
Golgi complex
in what stage of the cell cycle dose DNA replication occur
S
if the cytoplasm of a cell is very basophilic or blue when stained with Wright stain it contains
large number of ribosomes
how dose the genetically active portion of the nuclear chromatin look when stained with Wright stain
diffuse, uncondensed and pale blue
where are surface markers that help in cell identification found
cell membrane
the nucleolus of a cell is composed of
RNA
a purchase hemoglobin standard is used to adjust a hemoglobinometer. This standard is being used as a
calibrator
