#1
Why is it important to follow proper labeling procedures for specimens?
All of the above
ExplanationEnsures accurate identification, tracking, and results interpretation.
#2
What is the primary reason for using a tourniquet during venipuncture?
To facilitate blood flow and aid in vein visualization
ExplanationIncreases venous pressure and dilates veins.
#3
Which of the following is a suitable antiseptic for cleaning the site before venipuncture?
70% isopropyl alcohol
ExplanationEffective against skin flora without causing irritation.
#4
Which of the following is a suitable method for collecting a urine sample for culture?
Collect urine midstream
ExplanationMinimizes contamination from urethra or external genitalia.
#5
What is the preferred specimen for diagnosing malaria?
Capillary blood
ExplanationHigher parasite concentration in capillary blood.
#6
What is the recommended method for collecting a throat swab specimen for streptococcal culture?
Gently swabbing the posterior pharynx and tonsillar area
ExplanationMaximizes recovery of organisms without trauma.
#7
Which of the following tubes is used for collecting blood for a complete blood count (CBC)?
Lavender-top tube
ExplanationContains EDTA to prevent clotting.
#8
Which of the following specimens should be collected first during a multiple specimen collection process?
Blood cultures
ExplanationMinimizes contamination from other samples.
#9
Which of the following anticoagulants is commonly used for collecting blood samples for coagulation studies?
Sodium citrate
ExplanationPrevents blood clotting by chelating calcium.
#10
Which of the following specimens requires chilling during transportation?
Serum for glucose testing
ExplanationPrevents glycolysis which can alter glucose levels.
#11
Which of the following is a suitable preservative for stool specimens in parasitology testing?
Formalin
ExplanationPreserves morphology of parasites.
#12
What is the appropriate action if a blood sample needs to be transported but cannot be delivered to the laboratory immediately?
Place the sample on ice packs
ExplanationSlows metabolic processes and minimizes cell degradation.
#13
Which of the following is a critical step in collecting a blood gas sample?
Removing air bubbles from the syringe
ExplanationEnsures accurate gas composition analysis.