#1
Which of the following is an appropriate step when collecting a blood specimen?
Using a dirty needle for venipuncture
Mixing the sample with other patients' samples
Labeling the sample container before specimen collection
Leaving the tourniquet on for an extended period after venipuncture
#2
What is the preferred site for collecting a blood specimen from an adult?
Radial artery
Femoral vein
Brachial vein
Antecubital vein
#3
Which of the following is an appropriate method for collecting a throat swab specimen?
Collecting the sample after the patient has gargled with mouthwash
Rubbing the swab against the teeth before collecting the specimen
Avoiding contact with the tonsils to prevent contamination
Using a sterile swab to vigorously rub the back of the throat
#4
What is the recommended method for collecting a sputum specimen?
Collecting the specimen in a non-sterile container
Collecting the specimen immediately after a meal
Instructing the patient to cough deeply to produce sputum
Discarding the first portion of sputum produced
#5
Which of the following is a proper way to collect a wound specimen?
Using a dry cotton swab to collect the specimen
Irrigating the wound before specimen collection
Avoiding the collection of purulent material
Collecting the specimen after the wound has been cleaned with alcohol
#6
What is the recommended method for collecting a nasopharyngeal swab for respiratory virus testing?
Inserting the swab only 1 cm into the nostril
Rubbing the swab against the nasal septum
Collecting the sample with a dry swab
Inserting the swab deep into the nasal cavity until resistance is felt
#7
When collecting a blood specimen for coagulation studies, what type of tube should be used?
SST (serum separator tube)
Green top tube
Blue top tube
Lavender top tube
#8
What is the recommended technique for collecting a skin lesion specimen for culture?
Scraping the lesion surface with a sterile scalpel blade
Irrigating the lesion with saline before collection
Applying pressure to the lesion to express pus
Swabbing the lesion with a dry cotton swab
#9
What is the recommended method for collecting a wound swab specimen?
Using a dry cotton swab without transport medium
Collecting the specimen from the surface of the wound
Swabbing the wound after it has been irrigated
Collecting the specimen after applying antiseptic solution
#10
Which of the following is an appropriate technique for collecting a stool specimen for occult blood testing?
Using a wooden applicator to collect a sample
Avoiding collection from different areas of the stool
Collecting the sample in a sterile container
Testing the specimen immediately after collection
#11
Which of the following anticoagulants is commonly used for blood specimen collection?
Sodium citrate
Sodium chloride
Calcium sulfate
Potassium phosphate
#12
When collecting a urine specimen for culture and sensitivity testing, which technique is most appropriate?
Collecting the sample in a non-sterile container
Taking a sample from an indwelling catheter port
Using a clean catch midstream technique
Collecting the first voided specimen of the day
#13
Which of the following is NOT a suitable transport medium for transporting a bacterial culture specimen?
Amies transport medium
Stuart transport medium
Milk
Cary-Blair transport medium
#14
What is the primary purpose of collecting a cerebrospinal fluid (CSF) specimen?
To assess liver function
To diagnose central nervous system infections
To measure blood glucose levels
To assess kidney function
#15
Which of the following is NOT a suitable anticoagulant for plasma specimen collection?
Heparin
EDTA (Ethylenediaminetetraacetic acid)
Citrate
Sodium bicarbonate
#16
What is the appropriate method for collecting a stool specimen for ova and parasite examination?
Collecting the specimen from the toilet paper
Collecting a sample from the surface of the stool
Collecting the sample in a sterile container
Discarding the first portion of the stool
#17
Which of the following is a proper way to collect a sputum specimen for acid-fast bacilli (AFB) smear microscopy?
Collecting the specimen in a sterile container
Discarding the first portion of sputum produced
Collecting the sample after eating a heavy meal
Rinsing the mouth with mouthwash before collection
#18
What is the appropriate method for collecting a synovial fluid specimen?
Collecting the sample in a non-sterile container
Warming the joint before specimen collection
Collecting the sample from the superficial layers of the joint space
Avoiding collection from a joint affected by inflammation
#19
What is the purpose of using a transport medium for specimen collection?
To preserve microorganisms
To dilute the specimen
To inhibit microbial growth
To increase specimen volume
#20
Which of the following is a common preservative used for stool specimen collection?
Potassium oxalate
Magnesium sulfate
Sodium thioglycolate
Formalin
#21
What is the purpose of refrigerating a stool specimen?
To preserve anaerobic bacteria
To prevent bacterial overgrowth
To speed up the growth of pathogens
To facilitate specimen collection
#22
In what condition should a urine specimen be stored if there will be a delay in processing?
Room temperature
At 4°C (39°F)
At 37°C (98.6°F)
At 50°C (122°F)
#23
Which of the following is NOT a common preservative used for urine specimens?
Boric acid
Sodium azide
Thimerosal
Acetic acid
#24
Which of the following is NOT a common additive used in blood collection tubes?
Sodium fluoride
Gel separator
Silica particles
Methylene blue
#25
What is the recommended method for collecting a cerebrospinal fluid (CSF) specimen for cell count and differential?
Collecting the specimen in a plain tube
Mixing the specimen with anticoagulant immediately after collection
Centrifuging the specimen before analysis
Using a sterile container with screw cap