Arterial blood leaves the heart through the: - Answer- Aorta
The liquid portion of the blood within the body is: - Answer- Plasma
The laboratory
... [Show More] receives a STAT request for a blood glucose level on a patient in the emergency department. It is appropriate to: - Answer- Treat the request as a medical emergency: collecting and processing the blood immediately
The best location to perform a dermal puncture for a point-of-care glucose test on an adult is the tip of the palmar surface of the: - Answer- Third or fourth finger
Low and high controls are required for a glucose meter. These are run: - Answer- Exactly the same as patient samples are run
A patient has recently had a radical mastectomy of the right breast. The best site for venipuncture in this patient is the: - Answer- Left arm
Urine begins forming in the __________ where the blood is ____________. - Answer- Kidneys; filtered
The length and width of lancet blades are important for assuring an adequate flow of blood and to: - Answer- Prevent injury to the bone
Blood culture collection sites are prepared by swabbing the venipuncture site with iodine, which is left on for at least: - Answer- 20 seconds
A tourniquet is applied to the arm above a venipuncture site to: - Answer- Slow the flow of venous blood to the heart
Arterial walls have thick layers of _________________to withstand increased blood pressure during the contraction phase of the heart and to maintain blood flow during its resting phase. - Answer- Muscle
Which of the following is a normal finding in a plasma specimen? - Answer- Light yellow color
A blood specimen for a 2-hour postprandial glucose test is collected: - Answer- After the patient eats a meal
Which of the following describes the appropriate response by the phlebotomist? - Answer- A patient on withhold for 8 hours reports drinking water. A blood glucose level was collected, and no report was added to the requisition.
A patient's laboratory requisition requests the specimen by collected by fingerstick. The phlebotomist about to perform the fingerstick notices that the patient's hand feels cold. It is appropriate for the phlebotomist to: - Answer- Warm the patient's skin prior to performing the puncture
A patient has a cast on the left arm and an IV in the right forearm. A venipuncture in the patient's right arm must be done: - Answer- Below the IV in a different vein
Skin puncture for neonatal screening specifies that: - Answer- The first drop of blood is wiped away
To prevent tampering and misidentification of samples for legal purposes, everyone who handles the specimen must provide: - Answer- Documentation of their identity and the date and time the sample is handled
A neonatal bilirubin specimen should be collected in a (n): - Answer- Amber microcollection tube and protected from light
Peak and trough specimens are collected for therapeutic drug monitoring. The trough specimen is typically collected: - Answer- 30 minutes before a dose
A specimen for a blood ammonia test is to be preserved from the time of collection until it is tested in the laboratory. The best course of action is to keep the tube: - Answer- In a cup of ice water
The performance and speed of centrifuges should be checked: - Answer- Every 3 months
Which of the following is the proper greeting to say when first approaching a patient? - Answer- "Good afternoon. I'm from the laboratory. Can you tell me your name please?"
Which of the following best describes the safe operation of a centrifuge? - Answer- Tube stoppers are left on, the centrifuge is loaded by balancing similar tubes, and the lid is closed during centrifugation
The preferred depth of incision for a skin puncture of a premature infant is: - Answer- 0.85 mm
The arteries used for arterial puncture, listed in order of preference, are: - Answer- Radial, brachial, femoral
The transportation of blood and body fluid specimens by pneumatic tube system: - Answer- Is not recommended
A phlebotomist is asked to assemble the equipment for an arterial puncture. Which of the following would be inappropriate? - Answer- Tourniquet
When collecting blood samples from a patient with a venous access device (VAD): - Answer- Discard the first 5 mL of blood to flush the VAD
The industry-wide stopper color for tubes chemically clean enough to be used for collecting blood specimens for the determination of trace elements is: - Answer- Royal blue
After centrifuging a green-stoppered tube containing blood to be tested for an electrolyte panel, the phlebotomist notes that the serum is pink, indicating: - Answer- Hemolysis and an unacceptable specimen
A phlebotomist must collect from a patient in isolation with contact precautions. The appropriate personal protective equipment (PPE) is: - Answer- Gloves and gown
The procedure for a glucose tolerance test (GTT) calls for blood specimens to be collected at intervals of one-half hour, 1 hour and 2 hours after the glucose dose has been ingested. An outpatient scheduled for a GTT arrives at the clinic at 0715. The patient started drinking the glucose beverage at 0725 and finished at 0730. The first specimen should be collected at: - Answer- 0800
When a lipid panel is ordered, the patient should be: - Answer- Fasting for at least 12 hours; water is allowed but not caffeine or nicotine
A patient is given urine collection materials and told to collect a urine sample by cleaning the urethral meatus, starting to void without collection, and collecting the remainder of the voided urine in a specimen cup. This urine sample is: - Answer- A clean-catch, midstream urine
The container for a 24-hour urine collection should be: - Answer- Labeled and stored in a refrigerator
During the collection of a 24-hour urine, it is important to: - Answer- Avoid contamination of the urine specimen with feces
Which blood specimen would be rejected as unsatisfactory? - Answer- A light blue-stoppered tube that is 1/3 full
A phlebotomist is waiting while an elderly patient slowly gets back into bed. The phlebotomist shows appropriate nonverbal communication skills by: - Answer- Being thoughtful, considerate, and offering to assist
After completing venipuncture by evacuated tube, it is appropriate to: - Answer- Dispose of the needle in a nearby sharps container
When collecting blood with a syringe, pulling back quickly and hard on the plunger can: - Answer- Collapse the vein and hemolyze the blood
A skin puncture for a complete blood cell (CBC) count is ordered on a newborn. The phlebotomist finds the infant is crying violently. The phlebotomist should: - Answer- If possible wait until the infant has stopped crying for 1 hour
Proper placement of the needle within a vein is indicated by all the following, except: - Answer- Swelling around the venipuncture site
Which of the following represents an inappropriate technique for labeling of blood collection tubes? - Answer- The phlebotomist labels the vacutainer tubes before calling an outpatient into the drawing area
All the following terms indicate the patient has had nothing to eat, except: - Answer- Postprandial
The term for identifying the means of transmission of a contagious disease from its host is: - Answer- Chain of infection
The most effective means of preventing the spread of infectious diseases is: - Answer- To observe proper hand-washing techniques
The laboratory receives a request to collect 450 mL of blood from a patient with polycythemia. This blood collection would be called a (n): - Answer- Therapeutic phlebotomy
Care in centrifuging, such as eliminating splashing or splattering and not 'popping' off tube stoppers, are designed to prevent the formation of: - Answer- Aerosols
A phlebotomist performs a venipuncture without disinfecting the venipuncture site and leaving the tourniquet on longer than indicated. This would be considered: - Answer- Negligence [Show Less]