#1
Which of the following is an appropriate step when collecting a blood specimen?
Labeling the sample container before specimen collection
ExplanationEnsures proper identification of the collected sample.
#2
What is the preferred site for collecting a blood specimen from an adult?
Antecubital vein
ExplanationCommonly chosen for accessibility and minimal discomfort during blood collection.
#3
Which of the following is an appropriate method for collecting a throat swab specimen?
Using a sterile swab to vigorously rub the back of the throat
ExplanationEnsures a sufficient sample for accurate microbial analysis.
#4
What is the recommended method for collecting a sputum specimen?
Instructing the patient to cough deeply to produce sputum
ExplanationFacilitates the retrieval of lower respiratory tract secretions for examination.
#5
Which of the following is a proper way to collect a wound specimen?
Irrigating the wound before specimen collection
ExplanationReduces contamination and ensures a representative sample of microorganisms present in the wound.
#6
Which of the following anticoagulants is commonly used for blood specimen collection?
Sodium citrate
ExplanationPrevents blood clotting, maintaining the sample's liquid state for analysis.
#7
When collecting a urine specimen for culture and sensitivity testing, which technique is most appropriate?
Using a clean catch midstream technique
ExplanationReduces contamination, providing a more accurate representation of the patient's urinary tract flora.
#8
Which of the following is NOT a suitable transport medium for transporting a bacterial culture specimen?
Milk
ExplanationLacks the necessary properties to maintain the viability of bacterial cultures during transportation.
#9
What is the primary purpose of collecting a cerebrospinal fluid (CSF) specimen?
To diagnose central nervous system infections
ExplanationAllows for the examination of pathogens affecting the central nervous system.
#10
Which of the following is NOT a suitable anticoagulant for plasma specimen collection?
Sodium bicarbonate
ExplanationNot commonly used as an anticoagulant for preserving plasma samples.
#11
What is the purpose of refrigerating a stool specimen?
To prevent bacterial overgrowth
ExplanationPreserves the sample by slowing bacterial multiplication.
#12
In what condition should a urine specimen be stored if there will be a delay in processing?
At 4°C (39°F)
ExplanationPreserves the integrity of the urine sample when immediate processing is not possible.
#13
Which of the following is NOT a common preservative used for urine specimens?
Thimerosal
ExplanationNot typically employed as a preservative in urine specimen collection.
#14
Which of the following is NOT a common additive used in blood collection tubes?
Methylene blue
ExplanationNot commonly used as an additive in blood collection tubes for various analyses.
#15
What is the recommended method for collecting a cerebrospinal fluid (CSF) specimen for cell count and differential?
Using a sterile container with screw cap
ExplanationEnsures a contamination-free sample for accurate cell count and differential analysis.