#1
Which of the following is NOT a proper technique for collecting a blood specimen?
Reusing a needle from a previous venipuncture
ExplanationReusing needles can lead to contamination and infection risks.
#2
What is the ideal temperature range for transporting most specimens?
0-4°C
ExplanationMaintaining specimens at this temperature range helps preserve their integrity.
#3
Which of the following is an appropriate technique for collecting a sputum specimen?
Collecting the specimen in a sterile container
ExplanationSterility prevents contamination for accurate culture results.
#4
What is the recommended duration for handwashing before collecting a specimen?
At least 30 seconds
ExplanationEnsures thorough removal of pathogens to prevent contamination.
#5
Which of the following is NOT a suitable method for collecting a wound culture specimen?
Using a non-sterile container for specimen collection
ExplanationSterility is crucial to prevent contamination in wound culture specimens.
#6
What is the correct procedure for collecting a throat swab specimen for streptococcal testing?
Collecting the specimen from the back of the throat and tonsils
ExplanationEnsures collection of relevant microorganisms for accurate testing.
#7
Which of the following is NOT a recommended method for collecting a cerebrospinal fluid (CSF) specimen?
Collecting CSF in a non-sterile container
ExplanationSterility is crucial to prevent contamination in CSF specimens.
#8
Which of the following anticoagulants is commonly used for blood specimens intended for hematology studies?
EDTA (Ethylenediaminetetraacetic acid)
ExplanationEDTA preserves blood cell morphology for accurate hematology studies.
#9
Why is it important to follow the correct order of draw when collecting multiple blood tubes?
All of the above
ExplanationMaintains sample integrity, prevents cross-contamination, and ensures accurate test results.
#10
Which of the following is a common preservative used in stool specimen containers?
Formalin
ExplanationFormalin helps preserve the structure of stool specimens for analysis.
#11
Why is it important to label specimen containers accurately?
All of the above
ExplanationPrevents mix-ups, ensures proper identification, and maintains patient safety.
#12
Which of the following is a common fixative used for preserving tissue specimens?
Formalin
ExplanationFormalin preserves tissue structure for histological examination.
#13
Why is it essential to follow the correct specimen handling procedures?
All of the above
ExplanationMaintains sample integrity, ensures accurate results, and prevents errors.
#14
Which of the following is NOT a common anticoagulant used for blood specimen collection?
Potassium hydroxide
ExplanationPotassium hydroxide is not used as an anticoagulant in blood collection.
#15
Which of the following is a critical step in collecting a clean catch urine specimen?
Discarding the first portion of urine stream
ExplanationFirst portion may contain contaminants from the urethra.
#16
What is the appropriate method for transporting a frozen specimen?
Using a dry ice container
ExplanationMaintains specimen integrity during transport at freezing temperatures.
#17
What is the appropriate way to collect a stool specimen for occult blood testing?
Collecting the entire stool sample in a sterile container
ExplanationPrevents contamination and ensures accurate occult blood testing.
#18
Why is it important to maintain the chain of custody for forensic specimens?
All of the above
ExplanationEnsures legal admissibility, integrity, and accountability of evidence.
#19
Why is it important to maintain sterility during specimen collection?
All of the above
ExplanationPrevents contamination, ensures accurate results, and maintains patient safety.