A nitrate test is performed on a glucose nonfermenter. When the
nitrate reagents were added, no color change occurs. When zinc dust
was added, no color develops. How should this test be reported?
Positive for nitrite and negative for molecular nitrogen
Negative for molecular nitrogen and negative for nitrate production
Positive for molecular nitrogen and negative for nitrite production
Negative for nitrate and negative for nitrite reduction – ANSWER-
Positive for molecular nitrogen and negative for nitrite production
How does hydroxyurea aid in the treatment of sickle cell disease?
,Acts as an analgesic in pain management.
Prevents sickle cells from clumping together.
Induces increased production of HbF.
Reduces the number of sickle cells that form. - ANSWER-Induces
increased production of HbF.
To assess drug concentrations during the trough phase:
Blood should be drawn about one hour after the administration of an
oral dose of the drug.
Blood should be drawn about half an hour before the next dose is
given.
Blood should be drawn about two hours after the administration of an
oral dose of the drug.
Blood should be drawnimmediately before the next dose is given. -
ANSWER-Blood should be drawn immediately before the next dose is
given.
A patient has a history of repeated spontaneous abortion.
Coagulation studies reveal an elevated APTT, normal PT, normal
platelet function, and normal thrombin time. Schistocytes were seen
on the peripheral blood smear.
Factor VIII assay
Mixing studies with factor-deficient plasmas
Antinuclear antibody test
, Platelet neutralization test - ANSWER-Platelet neutralization test
Acetest® can be used to test for ketones in:
A. urine
B. urine and serum
C. urine, serum and whole blood
D. urine, serum, whole blood and CSF - ANSWER-C. urine, serum and
whole blood
Which of the following best describes the benefits of the RPR or
VDRL tests:
Diagnostic of active syphilis
Diagnostic of latent syphilis
Diagnostic of neuro-syphilis
Monitoring course of treatment - ANSWER-Monitoring course of
treatment
The following statements are true regarding the Lewis blood group
EXCEPT:
Antigen expression is influenced by secretor status
Antigens are adsorbed onto the red cells from the plasma
Antigens are a structural component of the red cell membrane ABO
group affects antigen expression - ANSWER-Antigens are a
structural component of the red cell membrane
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