#1
Which of the following is an important consideration when collecting blood specimens for laboratory testing?
Identifying the patient correctly before collection
ExplanationPatient identification is crucial to avoid errors in specimen collection.
#2
When collecting a wound swab for culture and sensitivity testing, what is an essential step to ensure accurate results?
Cleaning the wound with saline before collection
ExplanationCleaning the wound prevents contamination and ensures accurate culture and sensitivity results.
#3
What is the appropriate procedure for handling a 24-hour urine collection?
Collecting all urine voids in a single container for 24 hours
ExplanationAccurate collection of all urine voids over 24 hours provides a comprehensive sample for analysis.
#4
Which of the following is NOT a proper handling practice for collecting a stool sample for culture?
Refrigerating the sample until it can be transported to the laboratory
ExplanationRefrigeration can affect the viability of organisms in the stool sample and is not recommended.
#5
Which of the following is NOT a recommended practice for collecting a stool sample for fecal occult blood testing?
Mixing the sample with water before collection
ExplanationAdding water to stool samples can dilute blood, affecting the accuracy of fecal occult blood testing.
#6
What is the recommended technique for collecting a urine specimen for culture and sensitivity testing?
Cleaning the urethral meatus before collection
ExplanationPreventing contamination by ensuring cleanliness of the collection site.
#7
Which of the following anticoagulants is commonly used for blood specimen collection for coagulation studies?
Sodium citrate
ExplanationSodium citrate is frequently used to prevent blood from clotting for coagulation studies.
#8
Which of the following is a proper technique for collecting a throat swab for culture and sensitivity testing?
Inserting the swab into the mouth without touching the teeth or tongue
ExplanationPreventing contamination by avoiding contact with teeth or tongue during swabbing.
#9
When collecting a sputum specimen for acid-fast bacilli (AFB) testing, what is the preferred method for obtaining the sample?
Collecting the sample in the morning immediately after waking up
ExplanationMorning sputum samples are often more concentrated and yield better results for AFB testing.
#10
Which of the following is a proper technique for collecting a nasopharyngeal swab for respiratory virus testing?
Inserting the swab parallel to the palate
ExplanationInserting the swab parallel to the palate ensures proper collection and minimizes discomfort.
#11
When collecting a stool specimen for occult blood testing, what dietary restriction should the patient follow before sample collection?
Avoidance of non-steroidal anti-inflammatory drugs (NSAIDs)
ExplanationNSAIDs can interfere with occult blood test results, so patients should avoid them before collection.
#12
In which of the following situations would a tourniquet be contraindicated during blood specimen collection?
When the patient has fragile veins
ExplanationUsing a tourniquet could damage fragile veins, so it should be avoided.
#13
Which of the following is NOT a proper handling practice for collecting a stool specimen for ova and parasite examination?
Sending the specimen to the laboratory immediately after collection
ExplanationImmediate sending of stool samples may affect the accuracy of ova and parasite examination.
#14
Which of the following is NOT a recommended practice for handling a cerebrospinal fluid (CSF) specimen?
Storing the specimen at room temperature
ExplanationCSF specimens should be refrigerated to preserve integrity and prevent bacterial growth.
#15
In which of the following scenarios would a chain-of-custody form be required for specimen collection?
Collecting a urine sample for drug testing in the workplace
ExplanationChain-of-custody forms are necessary for legal integrity and tracking in workplace drug testing.
#16
Which of the following is a reason to reject a urine sample for urinalysis?
Presence of menstrual blood contamination
ExplanationMenstrual blood contamination can affect urinalysis results and should prompt sample rejection.
#17
During blood specimen collection, what is the recommended order of draw for multiple tubes?
Blue, lavender, red, green
ExplanationFollowing the correct order of draw prevents cross-contamination and ensures accurate test results.