Terms in this set (100)
The tube that will best prevent falsely increased potassium test results is:Light greenFailing to adequately invert a lavender stopper tube after collection will:Produce a clotted specimenThe presence of a clot is acceptable in:red stopper tubes.The part of a syringe that is withdrawn after the vein is entered is the:plungerMany newer instruments in the laboratory are able to withdraw patient sample directly through the stopper of an unopened blood collection tube. The instrument identifies the correct tube by means of:Bar code label on the tubeBasic information that should be present on all requisition forms includes all of the following except the:type of collection tubes.All of the following are used to identify a patient except the:bed sign.The most important purpose of a requisition form is:Authorization to perform the procedureWhen encountering a patient with casts on both arms and no wrist band, the phlebotomist should first:Check patient anklesPatient reassurance includes:briefly explaining the procedure for each patientThe vein of choice for routine venipuncture is the:Median cubitalPalpate means to:Examine by touchProlonged application of a tourniquet will cause:hemolysisCorrect palpation of a vein includes all of the following except:detecting a pulse using the thumb.Which of the following is not acceptable sterile technique?Putting on gloves and palpating the cleansed areaWhen collecting specimens in a patient's room, tubes are routinely labeled:After collecting the bloodPrior to leaving a patient's room, a phlebotomist should do all of the following except:eject the needle from the adapter into a sharps container.Prior to bandaging the puncture site, the phlebotomist should:Examine the site for bleedingWhen properly used and organized before performing a venipuncture, the patient requisition forms will allow the phlebotomist to do all of the following except:review previously ordered and collected testsTwo identifiers for patient identification before specimen collection are routinely secured by all the following means except:asking the patient "Are you John Doe?" or "Are you Mary Doe?".The Clinical Laboratory and Standards Institute (CLSI) recommends that all patient specimens are delivered to the laboratory no more than 2 hours after collection to reduce preexamination variables caused by cellular action and the effects of prolonged exposure of specimens to room temperatures, such as:glycolysis caused by cells' use of glucose; hemolysis and leakage of potassium from the cells into the plasma or serum; the destruction of coagulation factors from exposure to room temperatures.When encountering a patient who is sleeping, the phlebotomist should:Awaken the patient before collectingSpecimens for test substances that exhibit diurnal variation must be collected:At specific timesThe best way to prevent fainting in a patient during blood collection is to:Have the patient lie down during the phlebotomyPatients are most likely to be in a basal state at:6 amBlood tests that are affected by the patient's posture are those that measure:Large moleculesCollection of specimens from leg veins is not recommended in all of the following except:patients with multiple fractures.When collecting blood from a patient with a very edematous right arm and a large hematoma in the antecubital area of the left arm, the phlebotomist should collect the specimen from:Below the hematomaCollecting blood from an area containing a tattoo may result in:infectionWhen collecting blood from a patient with an intravenous line, the phlebotomist should not:Draw from above the intravenous lineThe puncture site may require additional pressure to stop bleeding when the patient(b and c)After filling the first tube of a three-tube collection, blood does not flow into the second tube. The phlebotomist should:1. move the needle slightly. 3. try a new second tube.Using a 20-gauge needle and a 10-mL evacuated tube on a small vein may cause:A collapsed veinFailure to remove the tourniquet before removing the needle:May produce hematomaUsing a small-gauge needle with a large evacuated tube can cause:hemolysisThe best reason why the majority of patient samples are drawn in the early morning hours is because:a patient will be in the basal stateCommercial identification bands with built-in matching stickers that may be placed on the patient's blood sample tubes are particularly useful for which of the following types of samples:transfusion services Blood BankApplying a tourniquet to or drawing blood from an arm located on the same side of the body as a recent mastectomy can be harmful to the patient and may produce erroneous test results. The application of a tourniquet as part of such blood collections is discouraged for all of the following reasons except:may cause a release of harmful cells from the surgical site into the circulation.A patient who is not allowed to have food or water for a specified time is classified as:NPOA phlebotomist who enters a patient's room to collect a fasting specimen and finds the patient eating breakfast should:Notify the nurseIf a supervisor tells the phlebotomist to collect a fasting specimen from a nonfasting patient, the phlebotomist should:Record "nonfasting" on the requisition slipThe timing for a glucose tolerance test (GTT) begins:When the patient finishes drinking the glucoseThe term diurnal variation is associated with:Timed collectionsThe specimens collected during the glucose tolerance test (GTT) after the patient drinks the glucose will be analyzed at the end of the test. The specimens should be collected in:Grey stopperThe fasting specimen for a glucose tolerance test (GTT) is drawn at 0700, and the patient finishes drinking the glucose at 0745. The correct time to draw the 1-hour specimen is:0845A phlebotomist who cannot locate the patient on whom a cortisol level is scheduled for collection at 1000 should:Return the requisition to the nursing station for reschedulingThree blood cultures from a patient requiring ASAP administration of antibiotics are collected:IMMEDIATREKY FROM THREE DIFFERENT SITESTo inoculate blood culture media with blood drawn in a syringe, the phlebotomist:Inoculates anaerobic media firstSpecimens for all of the following should be protected from light except:gastrin.Chain of custody refers to the:Documentation of specimen handling for legal specimensExtra care may have to be taken when positioning the arm of patients with:(b and c)Performing venipunctures on pediatric patients may require all of the following except:telling the child it will not hurt.Select the response that lists the major steps of the 2-hour oral glucose tolerance test (OGTT) in the proper order.A fasting glucose specimen is collected, patient drinks a 75-g glucose solution within 5 minutes, and patient returns for an additional glucose test in 2 hoursTo ensure patient safety and medication effectiveness, the blood levels of many therapeutic drugs are monitored. The specimens that are typically drawn to do this are:a trough level drawn before the next scheduled dose is given, and a peak level drawn after the dose is givenDermal puncture is preferred over venipuncture in infants because:(all the above)Blood collected by dermal puncture most closely resembles:arterial bloodAll of the following are reasons why hemolysis is seen more frequently in specimens collected by dermal puncture than venipuncture except:lancets make a wider incision.All of the following are acceptable skin puncture devices except:surgical blades.The microspecimen collection container that would hold the largest volume of blood is a:Micro collection tubeUsing a lancet that produces a puncture deeper than recommended may cause:osteomyelitisThe calcaneus is located at the:Posterior of the heelWhich of the following statements is wrong?Infants are identified by the bassinet labelHow many attempts should a phlebotomist make to obtain an adequate amount of blood by dermal puncture before requesting assistance from another phlebotomist?twoThe possibility of infection is increased when:a puncture is made through a previous siteThe presence of air bubbles will most seriously affect a:Platelet count collected in a unopetteLaws in all states of the United States require testing for all of the following diseases in newborns using a heel stick specimen except:jaundice or elevated bilirubin.A physician questions the low bilirubin result on a jaundiced baby. This discrepancy may be due to:Exposing the specimen to the bili lightThe high red blood cell counts normally seen in newborns may cause:DECREASED GLUCOSE LEVELSFailure to completely fill the filter paper circle for a newborn screening test:Can cause a false negative testMultiplication of parasites within red blood cells occurs in:malariaPreparation of a blood smear using a slide that is not clean will result in:Holes in the smearA patient is experiencing symptoms of fever and chills. Which of the following procedures might the phlebotomist be requested to perform?Collection of thick and thin blood smearsThe Duke bleeding time method has been replaced with the template bleeding time because the template method:Is more standardizedBlood is removed from the bleeding time incision:by wicking with filter paperWhen performing a bleeding time on an adult, the incision is made:Horizontal to the antecubital creaseA bleeding time that continues for 15 minutes should be:discontinuedA falsely increased template bleeding time will be caused by:Pressing the puncture site every 30 secondsThe branch of biology dealing with microbes is called:microbiologyThe governmental agency that oversees public health care matters in the United States is:Department of Health and Human Services (DHHS)One agency that accredits educational programs for clinical laboratory personnel is the:National Accrediting Agency for Clinical Laboratory Science (NAACLS)Which of the following is NOT an appropriate work practice control or exposure control method for working with strong acids?Wear latex gloves.Which laboratory containers can be used to make critical measurements?Volumetric flasksAll of the following are true of pipets EXCEPT:A TD pipet must be rinsed to ensure the correct volume is deliveredA noncritical measurement can be:made using an Erlenmeyer flaskWhich of the following is true of a pH meter?measures the hydrogen ion concentration in a solutionIn the metric system, body weight is recorded in:kilogramsWhen converting metric units to English units:1 kilogram is equal to 2.2 poundsWhich of the following equivalents is CORRECT?1 mL is equal to 1,000 µL.Laboratory data is standardized regionally, nationally, and internationally by reporting in:SI unitsIf a 2 M solution is diluted 1:10, which of the following is true?The concentration of the dilution is 0.2 M.