Analyzing Medical Technologist 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 Analyzing Medical Technologist flashcards as text
Which method is the REFERENCE STANDARD for blood glucose measurement?
Answer: Hexokinase method
The hexokinase method is the NCCLS/WHO reference method for glucose measurement due to its high specificity and accuracy.
A patient has a positive direct antiglobulin test (DAT) with anti-IgG but negative with anti-C3d. Which condition is MOST consistent?
Answer: Warm autoimmune hemolytic anemia
Warm AIHA is typically IgG-mediated without complement activation, resulting in a DAT positive with anti-IgG but negative with anti-C3d.
Which parasite is identified by finding 'owl's eye' inclusions in cells on a peripheral blood smear?
Answer: None — owl's eye inclusions are found in CMV-infected cells, not blood parasites
Owl's eye inclusions are the hallmark of cytomegalovirus (CMV)-infected cells, not blood parasites; Babesia shows tetrad (Maltese cross) forms.
In mycobacteriology, which staining technique uses heat to drive carbol fuchsin into acid-fast organisms?
Answer: Ziehl-Neelsen stain
The Ziehl-Neelsen (hot) method uses heat to facilitate penetration of carbol fuchsin into mycobacterial waxy cell walls.
A newborn has a total bilirubin of 22 mg/dL at 36 hours of life. Which test is MOST important to order immediately?
Answer: Direct antiglobulin test (DAT)
A DAT on cord or neonatal blood detects maternal IgG antibodies coating fetal RBCs, determining if hemolytic disease of the newborn is present.
Which finding on urinalysis is pathognomonic for acute tubular necrosis?
Answer: Muddy brown granular casts
Muddy brown (coarsely granular) casts composed of renal tubular epithelial cell debris are pathognomonic for acute tubular necrosis.
The Westgard 1-3s rule is violated when a single control value exceeds which limit?
Answer: ±3 standard deviations from the mean
The 1-3s rule is a rejection rule triggered when any single QC value falls outside ±3 standard deviations from the established mean.