Medical Technologist Knowledge Flashcards
7 cards from real Medical Technologist Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Medical Technologist Knowledge flashcards as text
Which blood component is separated by centrifugation to yield a product used for treating thrombocytopenia?
Answer: Platelet concentrate
Platelet concentrate is obtained by centrifugation of whole blood and is transfused to treat thrombocytopenia or platelet dysfunction.
In hemoglobin electrophoresis at alkaline pH, which hemoglobin migrates to the same position as HbS?
Answer: HbD
HbD co-migrates with HbS at alkaline pH, so acid electrophoresis or HPLC is needed to distinguish them.
A reagent strip leukocyte esterase test is positive but the microscopic exam shows no WBCs. The most likely explanation is:
Answer: Contamination with vaginal secretions
Vaginal secretions can contribute leukocyte esterase activity, causing a false-positive result without true pyuria.
The INR (International Normalized Ratio) is calculated to standardize which coagulation test?
Answer: Prothrombin time (PT)
INR normalizes the PT using the International Sensitivity Index (ISI) of the thromboplastin reagent used.
Which organism is associated with urease production, is a common cause of peptic ulcers, and requires special culture conditions?
Answer: Helicobacter pylori
Helicobacter pylori produces urease and requires microaerophilic conditions and extended incubation (3–7 days) for culture.
A patient with type O blood receives type A blood. The antibody responsible for hemolytic transfusion reaction is:
Answer: Anti-A (IgM)
Type O individuals have naturally occurring IgM anti-A antibodies that cause immediate intravascular hemolysis against type A cells.
The creatinine clearance formula estimates which physiologic parameter?
Answer: Glomerular filtration rate (GFR)
Creatinine clearance is used as a surrogate for GFR because creatinine is freely filtered and minimally secreted by the glomerulus.