Urinalysis Flashcards
7 cards from real RMA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Urinalysis flashcards as text
A urine specimen left at room temperature for two hours before testing may show a falsely elevated pH. What causes this change?
Answer: Bacteria converting urea to ammonia
Bacteria break down urea into ammonia, raising the pH of a standing specimen.
Which urine collection method is preferred for an accurate routine urinalysis with the least contamination?
Answer: First morning clean-catch midstream
A first morning clean-catch midstream specimen is concentrated and minimizes contamination.
A reagent strip shows a positive nitrite result. This most strongly suggests the presence of what?
Answer: Gram-negative bacteria
Many gram-negative bacteria reduce urinary nitrate to nitrite, indicating a possible UTI.
What is the normal expected color of a freshly voided, properly hydrated urine specimen?
Answer: Pale yellow to amber
Normal urine ranges from pale yellow to amber due to the pigment urochrome.
Before dipping a reagent strip, the medical assistant should ensure the urine specimen is at what temperature?
Answer: Room temperature
Reagent strip reactions are calibrated for room-temperature specimens.
Which finding on a reagent strip is most commonly associated with uncontrolled diabetes mellitus?
Answer: Glucose and ketones
Glucose and ketones appear in urine when blood sugar is poorly controlled.
How should a reagent strip be read for accurate results after dipping?
Answer: Compared to the color chart at the specified timing
Each pad must be compared to the bottle's color chart at the manufacturer's specified time.