2027|| MOST RECENT EXAM ACTUAL COMPLETE REAL EXAM
QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS)
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A;
Since hemoglobin is measured spectrophotometrically on hematology analzyers,
interference from lipemia or icteric specimens can lead to decreased light
detected and measured through the sample and therefore inaccurate hemoglobin
results occur.
On an electronic cell counter, hemoglobin determination may be falsely
elevated caused by the presence of:
A. Lipemic or icteric plasma
B. Leukocytopenia or Leukocytosis
C. Rouleaux or agglutinated RBCs
D. Anemia or Polycythemia
False
A patient who has a primarily vegetarian diet will most likely have an alkaline
urine pH. A low-carbohydrate diet as well as the ingestion of citrus fruits can
also lead to a more
alkaline urine sample.
A patient who has a primarily vegetarian diet will most likely have an acid urine
pH.
,A;
During primary hypothyroidism, where a defect in the thryoid gland is
producing low levels of T3 and T4, the TSH level is increased. TSH is released in
elevated quantities in an attempt to stimulate the thryoid to produce more T3
and T4 as part of a feedback mechanism.
Serum TSH levels five-times the upper limit of normal in the presence of a low
T4 and low T3 uptake could mean which of the following:
A. The thyroid has been established as the cause of hypothyroidism
B. The thyroid is ruled-out as the cause of hypothyroidism
C. The pituitary has been established as the cause of hypothyroidism
D. The diagnosis is consistent with secondary hyperthyroidism
A;
Fusarium species is the most likely associated with mycotic keratitis.
Trichophyton rubrum is a dermatophyte that commonly causes an itching, scaling
skin infection of the feet, known as tinea pedis. Scedosporium apiospermum is
commonly
associated with sinusitis. Aspergillus niger typically causes otitis externa and can
also be associated with sinusitis.
Which of the following species or organisms is the most likely to be the cause of
mycotic keratitis (fungal eye infection)?
A. Fusarium species
B. Trichophyton rubrum.
C. Scedosporium apiospermum
D. Aspergillus niger
,A;
Oxalate, EDTA, and citrate are anticoagulants that inhibit clot formation.
Which of the following blood additives is most useful for serum collection:
A. Polymer barrier
B. Oxalate
C. EDTA
D. Citrate
A;
Albumin is a "negative" acute phase protein since it is found in decreased levels
during acute phase response. Alpha-1-antitrypsin, fibrinogen, and
ceruloplasmin are all "positive" acute phase proteins that are found in
increased levels during acute phase response.
Which one of the following usually shows a decrease during an acute phase
response?
A. Albumin
B. Alpha-1 Antitrypsin
C. Fibrinogen
D. Ceruloplasmin
, B;
This patient is most likely suffering from an immediate-acting coagulation
inhibitor; most commonly, lupus anticoagulant. Notice that the addition of
normal pooled plasma does not correct upon initial or incubated mix, which
means that the inhibitor is not time or
temperature-dependent.
Factor VIII is not the correct answer as a factor deficiency would have
corrected upon the addition of normal pooled plasma. Factor VII is not the
correct answer, as the aPTT assay does not account for factor VII activity or
concentration.
The laboratorian completed the mixing study ordered for John Doe. The results
are as follows:
Initial aPTT result: 167 seconds
Initial 1:1 Mix with Normal Pooled Plasma: 158 seconds
Incubated 1:1 Mix with Normal Pooled Plasma: 150 seconds
Which of the choices below would most likely explain the results for this patient?
A. Factor VIII deficiency
B. Immediate-acting coagulation inhibitor
C. Time/temperature-dependent coagulation inhibitor
D. Factor VII deficiency