Laboratory & Blood Collection Procedures
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169 terms
Terms | Definitions |
|---|---|
 In a normal hematocrit, the Buffy accounts for .. | Approximately 1% of whole blood |
| The following is generally used to cleans the skin before drawing blood?.. | Alcohol |
| Inaccurate test results may occur in certain test when what is used to prepare the skin prior to vein puncture... | Alcohol |
| Part of the preparation for am oral glucose tolerance test?.. | Give the pt a high carbohydrate drink immediately after the first blood draw |
| To prepare the skin before a bien puncture when alcohol causes inaccurate results for certain tests?.. | Soap & water |
| After how many unsuccessful attempts @ obtaining a good blood sample should you seek assistance from your supervisor or the doctor? | 2 |
| The best site for drawing blood from an infant is.. | The heel |
| Important when drawing blood from children ? | Gather your supplies and samples quickly as possible to avoid alarming the child with blood-collection tubes |
| When drawing blood from an elderly pt? | Recognize changes in skin conditions that increase bruising |
| The most common sites for vein puncture are the | Median cubital and cephalic veins |
| Blood tests for potassium and sodium identify | Fluid and electrolyte imbalances |
| An erythrocyte count (RBC) test is used to identify .. | Anemia |
| A blood urea (BUN) test is used to identify ... | Kidney disorder |
| Would you include when preparing a venipuncture site? | Cleanse the venipuncture site using a circular motion starting at the center and working outward |
| When performing a venipuncture using an evacuation system ? | Insert the needle at a 15 angle with the bevel side up |
| Used in the capillary puncture technique ?.. | Lancet |
| Is characteristic of the capillary puncture ?.. | The pt's non-dominant hand is used for this procedure |
| Which method of drawing blood would you use on a pt with small or fragile veins? | The needle and syringe system |
| Which procedure for obtaining a blood sample in adults and children is usually performed on the middle or ring finger? | The capillary puncture |
| Which blood collection device uses interchangeable collection tubes that allow you to draw several blood specimens from the same venipuncture site? | The evacuation system |
| Which of the following is characteristic of lancets? | They are small disposable instruments with a sharp point used to puncture the skin |
| A small, calibrated glass tube that holds a precise volume of fluid is called | Micropipette |
| The normal sodium blood level is | 136 - 145 mEq/L |
| Normal Prothrombin (PT) is | 11-15 Seconds |
| The normal range for Potassium in the blood is.. | 3.5-5.1 mEq/L |
| The normal blood glucose level is.. | 74-120 mg/dl |
| Which blood test identifies coronary artery disease and atherosclerosis ?.. | Total cholesterol |
| Gout is identified by which type of blood test?.. | Uric acid |
| A puncture resistant, leak-proof container see to dispose of needles, lancets,and other sharp objects is called .. | Sharp container |
| Factors result in failure to draw blood during venipuncture ?... | Losing the vacuum in the tube, veins are sclerosed, needle inserted through the vein |
| Enzyme -linked immunosorbent assay (ELISA) and western blot tests are used to confirm which of the following disorders ? | HIV infection |
| A Substance that when present on the surface of red blood cells cause the formation of antibodies that interact specifically with it are called? | Antigens |
| The following is a pieces of equipment that allows one to count blood cells by examining a diluted blood sample under a microscope? | Hemocytometer |
| The following identifies how much of the volume of a sample is made up of red blood cells after the sample has been spun in a centrifuge? | Hematocrit determination |
| To evaluate the endocrine system, one would... | Analyze hormone levels |
| Which of the following may cause changes in basal state? | Stress,drugs,exercise,diet |
| A percentage of each type of white blood cell in a total of 100 white cell observed is referred to as... | A differential |
| Maintenance @ a specific temperature for a specific amount of time until growth or a reaction occurs is? | Incubation |
| The general lab centrifugal (GLC) is calibrated every... | 6 months |
| The Ivy method and Duke method are used to measure .. | Bleeding time |
| An accumulation in the body of substance, known as ketones,which may be detected by testing urine, commonly observed in starvation, pregnancy and diabetes is.. | Ketosis |
| The laboratory test for Prothrombin time would be for.. | Evaluating anticoagulant drugs |
| The laboratory test for cholesterol would be for... | Assessing risk of coronary heart disease |
| The laboratory test for bleeding time would be for... | assessing hemostasis |
| The laboratory test for a white blood cell count would be for... | Detecting inflammation or infection |
| The temperature of the centrifuge is checked at the... | Beginning of each day |
| The laboratory test for Creatinine would be for.. | assessing glomerular filtration rate |
| For capillary collection from infants, a lancet with which of the following lengths should be used to avoid penetrating the bone?... | 1.5 mm |
| Anticoagulants prevent the blood from.. | Forming a clot |
| If during the course of a venipuncture,the pt starts to bleed severely,you should .. | Apply pressure to the site |
| For the Surgicutt Bleeding time test, the blood pressure cuff must be inflated on the pt's upper arm to.. | 40 mm Hg |
| The phlebotomist would play an active role in pt education for which the following procedures? | 24 HR urine samples, urine culture,glucose tolerance test |
| The laboratory test for hematocrit would be for which of the following? | Aiding in diagnosis of anemia |
| The laboratory test for a blood culture is used for which of the following? | Diagnose bacteremia |
| The test that is required to test the pt's insulin releasing mechanism is called... | glucose tolerance |
| A fasting blood specimen is needed for which of the following clinical laboratory assays?... | Triglyceride, cholesterol |
| Of the following lab tests, which procedure requires 10mL normal saline and 2 ot 3 - 20 Ml disposable syringes? | Collecting blood through CVC's |
| The prothrombin in the blood clotting process is dependent upon which of the following? | Vitamin K |
| The laboratory test for glucose tolerance would be... | Confirming diabetes mellitus, hypoglycemia |
| Which of the following dyes would be used to test a pt's liver function? | Bromsulphalein dye |
| Spinal fluid cultures are used to determine .. | Meningitis |
| A centrifuge is a piece of laboratory equipment used for which of the following? | Hemacytology, spinning test tubes at high speeds, separating the cellular and liquid portions of the blood |
| Which of the following blood chemical constitutes is light sensitive? | Bilirubin |
| When blood is collected from a pt, the serum should be separated from the blood cells as quickly as possible to avoid ... | hemoconcentration |
| Lab results are unreliable if specimens are collected ... | After ingestion of alcohol |
| Which of the following fluid is extracted from joint cavities? | Synovial fluid |
| The most common site to perform a venipuncture, or the bend of the arm is called... | Antecubital fossa |
| A state of abnormal variations is the size of red blood cells in the blood is... | Anisocytosis |
| The following items are needed to collect a blood culture specimen? | Alcohol preps, iodine scrub swab sticks, disposable gloves |
| A prolonged bleeding time for a pt may be caused by the pt's intake of ... | Mithramycin, dextran, aspirin |
| If a blood specimen is allowed to clot, without added anticoagulant, this is what remains: ... | serum, blood cells, fibrin clot |
| Why is it necessary to control the depth of a lancet insertion during skin puncture? | To avoid excessive bleeding |
| Which of the following conditions listed affect laboratory tests on blood specimens? | Altitude, needle inserted through the vein, humidity |
| Hemoconcentration can be caused by .. | Squeezing or probing the site, long term IV therapy, tourniquet left on for extended periods |
| A light colored layer of leukocytes and platelets which forms on the top of the red cell layer when a sample of blood is centrifuged or allowed to stand... | Buffy coat |
| Two primary tests for platelet activity are the bleeding time, which is used to assess platelet function,and platelet count, which evaluates platelet production ... | Bleeding and platelet |
| What effects does warming the site have on venipuncture? | Increases localized blood flow |
| Hematoma during venipuncture results from which of the following? | Needle bevel is partially inserted in the vein |
| Of the following veins, which would be most frequently used for venipuncture ? | median cubital vein |
| The test that requires passing a tube through the pt's nose is called | Hollander test |
| The laboratory test for sedimentation rate is described as... | The time required for erythrocytes to settle to the bottom of an upright tube @ room temperature ... |
| Which of the following are tourniquets used in venipuncture? | Rubber hose, blood pressure cuff |
| If a tube of blood is allowed to stand undisturbed, it will separate into... | 3 Major components |
| Serum that contains antibodies is referred to as | Antiserum |
| The rapid sequence of vascular spasms, plug formation and coagulation is known as | Homeostasis |
| How many counting chambers are used to count white blood cells? | 4 |
| Which of the following would be reason to reject a specimen for testing?... | Use of expired collection tubes, unlabeled specimen,discrepancies on the requisition |
| Of the following, which is not considered a time blood specimen | Cortisol |
| The normal pH of blood is | About 7.4 |
| An instrument which can be used to determine the concentration of a solution by measuring the light transmitted or absorbed by the solution is called | A spectrophotometer |
| A measurement of density is called | Specific density |
| A labeled specimen must include... | name and ID #, date and time, time of collection |
| On a typical microcollection tray you would not find... | A pt's id |
| A temperature controlled chamber into which inoculated media is placed so that bacterial growth will occur is called a/an | Incubator |
| The Complete Blood Count (CBC) includes which of the following tests? | Hgb, Hcr or crit, RBC |
| What is the best angel for a needle insertion during venipuncture? | 15*degrees |
| Why does blood separate into 3 layers when centrifuged? | Their various densities |
| To help minimize dizziness or fainting, blood donors should eat within six hrs of donating blood ... | 6 |
| What test may be affected most if the pt is not fasting? | glucose and triglycerides |
| Hemoguard is a type of ... | sheath |
| The most common antiseptic for a routine blood draw is... | 70% Isopropyl alcohol |
| The needle gauge with the smallest diameter is... | 23 |
| Needles are coded according to ... | Gauge |
| Which of the following is not skin puncture equipment? | Forceps |
| The most common skin test preformed is.. | PPD |
| A prolonged bleeding time is I indicative of... | Low platelet count |
| A series of tests measuring enzymes released into the blood after a heart attack is... | Serum enzyme test |
| What is a reference point with which test results are compared? | None of these choices: basal state, thromboplastin time, differential |
| When performing an arterial puncture, you should: .. | None of these choices ^_~ : apply pressure to the site for 3 min after collection, not apply pressure on the site after collection, apply pressure on the site for 15 min after collection. |
| The bevel of the needle should be in which position before entering the vein? | upward |
| when drawing a specimen to test blood alcohol, the site cannot be prepared with ... | alcohol |
| what is the ACT used to determine?.. | monitoring heparin therapy |
| A retractable sheath is part of a... | multiple draw needle |
| what is the special winged needle set that can be left in a pt's vein for up to 48 hrs and is used to administer medication and draw blood?.. | heparin lock |
| what is the name of the small metal bar that is inserted into the tube after collection of a capillary blood gas specimen used to aid in mixing the anticoagulant by means of a magnet?.. | flea |
| Pathogenic bacteria or blood poisoning in the blood is called.. | septicemia |
| what is the Allen test used to determine?.. | the presence of circulation |
| If a hematoma starts to form during the course of a phlebotomy, which of the folowing should be done?.. | remove needle and apply pressure to the site |
| In arterial blood gas procedure for adults, which of the following anticoagulants is added to coat the syringe barrel? .. | Heparin |
| For an ABG collection, what is the required amount if sample?.. | 1mL |
| The following complications could be associated with the collection of arterial blood gas?.. | Infection, Arteriospasm, Hematoma |
| What should be the minimum volume of the capillary tube used to collect a specimen for cpillary blood gas analysis?.. | .25 mL |
| When using a pusher slide, which is the correct angle?.. | 30 degrees |
| Which blood test usually does not require skin puncture?.. | Glucose |
| The following test uses a tamplate instrument to obtain blood for testing platelet integrity?.. | bleeding time |
| What is the name of the compatibility test performed before a unit of blood is determined to be suitable for transfusion?... | crossmatch |
| A test of the body's ability to absorb and utilize a particular substance is which of the following?.. | tolerance |
| Which method is the most common bleeding time test? | Surgicutt |
| Which of the following methods is used for detecting meningitis?.. | spinal fluid culture |
| The act by which a fluid will enter a tube or pipet because of the attraction between the glass and the liquid is?.. | aspiration |
| A measure of the diamter of needles is?.. | gauge |
| A hematocrit performed on a small sample if blood is ... | microhematocrit |
| The following is used in bedside glucose testing?.. | acu-check II, iascan, glucocheck |
| What is a commonly identified pathogenic agent causing skin nosocomial infections? | candida albicans |
| The Following is not included in testing for blood gas assay?.. | H2O |
| A blood collection vacuum tube part of the | B-D Vacutainer |
| The following sites is not recommend to collect capillary blood gases? | Lateral anterior area of the elbow |
| Therapeutic phlebotomy is used in the treatment of | Polycythemia |
| Which of the following blood analysis has a rise and fall in values with the time of the day, and thus must be collected on time | Cortisol |
| Lancets with which of the following maximum lengths are suitable for older children | 5mm |
| The value of total protein test due to prolonged use of a tourniquet can produce change in | Hemoconcentration |
| Venipuncture at sites with each of the following could affect test results except | Near a tattoo |
| Phlebotomy needles should be stored | @ room temperature |
| What gauge needle are commonly used for phlebotomy | 21 Gauge |
| If a problem occurs during collection, | Do not use an IV line |
| Cholesterol and _ could be tested from the same tubes | TSH |
| Serum glucose and _ could not be tested from the same tube | PT |
| Which of the following assays is preformed in the immunohematology section | direct Coombs test |
| Therapeutic drug monitoring usually is preformed | Clinical chemistry |
| The ova and parasite procedure is usually preformed in the | Clinical microbiology section |
| A skin puncture on an infants heel should not be more than | 2.4mm |
| Best angel for spreading a blood smear using two glass slides is | 30 degrees |
| For the Surgicutt bleeding time test, the blood pressure cuff must be inflated on the pt's upper arm to | 40 mm Hg |
| What is the usual dose of D-xylose administered to the patient in the D-xylose tolerance test | 25 g |
| Which of the following is obtained through a lumber puncture | cerebrospinal fluid |
| The NCCLS order of draw using conventional stoppers is | Yellow-red-light/blue-red/gray-green/gray-green-lavender-gray |
| The NCCLS order of draw using vacutainer tubes with Hemoguard closure | sterile-red-light blue-gold-light green-green-lavender-gray |
| The alternate syringe order of draw is | Sterile-light blue-lavender-green-Gary-red |
| Yellow stoppered tubes are used for | blood culture |
| Sodium heparin is the anticoagulant found in which color tube | Green |
| The pink plastic vacutainer contains | K2EDTA |
| The royal blue vacutainer contains the additive | Sodium heparin |
| The orange vacutainer contains the additive | Thrombin |
| Glucose determinations are done in a collection tube with a | Gray stopper |
| Sodium citrate is in the | light blue stopper tube |
| Blood grouping,typing and AIDS antibody test is preformed with a | Red stopped / glass tube |
| Red topped / glass tubes contain | No additives |
| The CBC ( which includes the hematocrit is collected with | Lavender evacuated tube |
| When blood is collected from a pt with syringe, and needs to be transferred to an evacuated tube, the phlebotomist should never push the blood into the tubes, because it will cause | hemolysis |
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