Medical Laboratory Technician Urinalysis and Body Fluids 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.
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A urine specimen with a specific gravity of 1.001 and a pale yellow color most likely indicates which condition?
Answer: Diabetes insipidus
Diabetes insipidus produces large volumes of very dilute urine due to insufficient ADH or renal unresponsiveness to ADH.
Which type of cast is most indicative of glomerular damage when found in a urine sediment examination?
Answer: Red blood cell casts
Red blood cell casts form in the renal tubules when RBCs become trapped in a protein matrix, indicating glomerular bleeding.
A cerebrospinal fluid sample with a glucose level significantly lower than the serum glucose and elevated protein most likely suggests what?
Answer: Bacterial meningitis
Bacterial meningitis characteristically shows markedly decreased glucose due to bacterial consumption and elevated protein from inflammation.
What is the expected appearance of a normal synovial fluid specimen?
Answer: Clear and pale yellow with high viscosity
Normal synovial fluid is clear, pale yellow, and highly viscous due to hyaluronic acid content.
Which urine chemical test principle relies on the double indicator method to detect pH?
Answer: Reagent strip pH pad using methyl red and bromothymol blue
The reagent strip pH pad uses the double indicator system of methyl red and bromothymol blue to cover pH ranges from 5 to 9.
A pleural fluid with a protein ratio (fluid/serum) greater than 0.5 and an LDH ratio greater than 0.6 is classified as what?
Answer: Exudate
Light's criteria classify a pleural fluid as an exudate when the protein ratio exceeds 0.5 or the LDH ratio exceeds 0.6.