What constitutes an appropriate urine specimen for acid-fast bacilli culture?
A) A minimum of 40 mL of a first morning specimen
B) A minimum of 40 mL of urine prior to eating the morning meal
C) Urine collected 30 minutes, 1 hour, and 2 hours after ingestion of 20 to 30 mL of sterile distilled water
D) 5 to 10 mL of urine
A
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The diving reflex may allow a person to survive extended periods of submersion in cold water secondary to:
A. bradycardia and a slowing of the metabolic rate. B. laryngospasm that protects the lungs from water. C. tachycardia and a lowering of the blood pressure. D. increases in the metabolic rate and oxygen demand.
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Using povidone-iodine to clean a site can contaminate the specimen and cause erroneously high levels of potassium, uric acid, and ____.
A. sulfate B. phosphate C. copper D. nitrate
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