FREE Medical Laboratory Technician MCQ Questions and Answers Flashcards
6 cards from real Medical Laboratory Technician Exam practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 FREE Medical Laboratory Technician MCQ Questions and Answers flashcards as text
Which anticoagulant is found in a lavender-top blood collection tube?
Answer: EDTA
Lavender-top tubes contain EDTA, which is the preferred anticoagulant for complete blood count testing.
What is the primary stain used to differentiate gram-positive from gram-negative bacteria?
Answer: Gram stain
The Gram stain uses crystal violet and safranin to classify bacteria based on cell wall composition.
A patient's blood glucose level is 250 mg/dL with ketonuria present. Which condition is most likely?
Answer: Diabetic ketoacidosis
Elevated blood glucose combined with ketonuria is characteristic of diabetic ketoacidosis.
Which electrolyte imbalance is most commonly associated with hemolyzed blood specimens?
Answer: Falsely elevated potassium
Hemolysis releases intracellular potassium into the serum, causing a falsely elevated potassium result.
What does an elevated erythrocyte sedimentation rate (ESR) primarily indicate?
Answer: Inflammation
An elevated ESR is a nonspecific marker of inflammation caused by increased fibrinogen and immunoglobulins.
In urinalysis, the presence of waxy casts most commonly indicates what condition?
Answer: Chronic renal failure
Waxy casts form in dilated tubules with prolonged urine stasis, indicating chronic renal failure.