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Final
| Question | Answer |
|---|---|
| Capillary blood is a mixture of arterial blood and venous blood. T True F False | T |
| Choose the anticoagulant that prevents platelets from clumping and preserves the appearance of blood cells for microscopic preparation, from the list below Thrombin Sodium polyanetholsulfonate Ethylenediamine tetraacetic acid (EDTA) Sodium heparin | Ethylenediamine tetraacetic acid (EDTA) |
| The color of the tube top for collection of a coagulation test is: gray. green lavender. light blue. | light blue. |
| It is important to shake a Vacutainer tube after collecting a blood sample so that the sample and additive are properly mixed. T True F False | F |
| In a routine venipuncture, the angle at which the needle enters the arm should be _____ degrees. 30 45 15 None are correct | 15 |
| Without a clot activator, whole blood typically clots in about what time frame? 6 to 12 minutes 15 to 60 minutes 1 to 5 minutes 70 to 90 | 15 to 60 minutes |
| Which of the following collection tubes contains thixotropic gel? Red Green Light green Lavender | Light green |
| Why should a tourniquet not be tied too tightly? It impedes arterial blood flow. It restricts venous blood return. All are correct. Veins won’t bulge or plump up. | All are correct. |
| When a medical assistant obtains a capillary blood sample, it is important that he or she squeeze and “milk” the finger to obtain an adequate amount of blood. T True F False | F |
| A tourniquet can remain in place for 2 minutes. After its removal, you must wait 5 minutes before reapplying it. The first statement is false; the second is true. Both statements are false. Both statements are true. | Both statements are false. |
| Blood obtained via capillary puncture can be collected: onto filter paper. in Microtainer tubes. in microhematocrit tubes. in capillary tubes. All are correct | All are correct |
| The laboratory requisition indicates that you are to collect a venous blood specimen for hematology testing, serum chemistry testing, and coagulation studies. What is the proper order of collection for? Two lavender, one red Light blue, red, lavender | Light blue, red, lavender |
| The device used for dermal puncture is a(n): lancet. butterfly. Unopette. Vacutainer. | lancet. |
| Which is the proper technique for performing a venipuncture? The needle bevel is face down, and the needle is inserted at a 15- to 30-degree angle. The needle bevel is face up, and the needle is inserted at a 15-degree angle. | The needle bevel is face up, and the needle is inserted at a 15-degree angle. |
| The smaller the gauge number, the larger the lumen of the venipuncture needle. T True F False | T |
| Which of the following antiseptics may be used for a blood culture collection site to eliminate contaminating bacteria? All are correct Chlorhexidine gluconate 70% isopropyl alcohol Povidone-iodine Benzalkonium chloride | All are correct |
| Thixotropic gel is present in which of the following venipuncture tubes? SST gold tube and PST green-gray tube PST green-gray tube SST red-gray tube SST gold tube | PST green-gray tube |
| A winged infusion set is also known as a: luer adapter. Hemagard tube. Velcro tourniquet. butterfly needle assembly. | butterfly needle assembly. |
| Which is the most correct method for performing a capillary puncture? Cleanse the finger with an alcohol antiseptic and immediately perform the finger puncture Wipe away the first drop of blood and then collect the sample. | Wipe away the first drop of blood and then collect the sample. |
| What is the major cause of specimen rejection? Improper handling Defective tube Incorrect tube used for the test ordered Insufficient quantity Hemolysis | Improper handling |
| You are required to collect a venous sample for a complete blood count (CBC). Which venipuncture tube would you collect? Red-topped and lavender-topped tubes A lavender-topped tube Light blue–topped tube A red-topped tube | A lavender-topped tube |
| No anticoagulants are found in which of the following tubes? Green topped Red topped Lavender topped Yellow topped | Red topped |
| The most common phlebotomy site(s) in adults is (are) the: veins in the antecubital space. radial vein. veins in the popliteal area. brachial artery. | veins in the antecubital space. |
| For children younger than _____ of age, dermal puncture is performed on the medial or lateral areas of the plantar surface of the heel. 2 years 3 years 18 months 12 months 6 months | 2 years |
| The smaller the gauge number of the venipuncture needle, the less likely it is that hemolysis of blood cells will occur. T True F False | T |
| A patient must give verbal consent before venipuncture can be performed. T True F False | T |
| What is the first step OSHA recommends for the effective management of an accidental sharps exposure? Incident report is completed. Site is washed for 10 minutes with soap, 10% iodine solution, or chlorine-based antiseptic. | Site is washed for 10 minutes with soap, 10% iodine solution, or chlorine-based antiseptic. |
| In adults and children, which finger is usually used for a routine capillary puncture site? Fifth finger Index finger Ring finger Thumb | Ring finger |
| What additive is found in blood culture tubes since it stabilizes bacterial growth? Sodium heparin Sodium polyanethole sulfonate Ethylenediamine tetraacetic acid (EDTA) Thrombin | Sodium polyanethole sulfonate |
| The needle size most commonly used for adult venipuncture is: 23 gauge. 16 gauge. 18 gauge. 21 gauge. | 21 gauge. |
| Leaving a tourniquet tied on a patient’s arm for longer than the recommended time results in: hemoconcentration. bifurcation. syncope. hematoma formation. | hemoconcentration. |
| The tourniquet should be tied on the arm for no longer than 1 minute. T True F False | T |
| Before a routine venipuncture or capillary puncture, the site typically is cleaned with: soap and water. povidone-iodine solution. isopropyl alcohol. ethyl alcohol. | isopropyl alcohol |
| A tourniquet is used during the phlebotomy procedure to: prevent venous flow out of the site and make the veins in the area more prominent. collapse the artery. make the veins in the area more prominent. prevent venous flow out of the site. | prevent venous flow out of the site and make the veins in the area more prominent. |
| The proper venipuncture tube for collecting a serum specimen is: a lavender-topped tube. a red-topped tube. a green-topped tube. a light blue-topped tube. a light blue-topped tube and a red-topped tube. | a red-topped tube. |
| The slant at the open end of a needle used for venipuncture is called the: lumen. shaft. bore. bevel. | bevel. |
| The needle size most commonly used by a blood bank for donations units is: 18 gauge. 16 gauge. 23 gauge. 20 gauge. | 16 gauge. |
| Which of the following Vacutainer tubes is routinely used for hematology testing? Green topped Red topped Light blue topped Lavender topped | Lavender topped |
| When the needle is inserted into the vein during a routine venipuncture, the bevel of the needle should be facing up. T True F False | T |
| What puncture depth is used for heel sticks? 3.0 mm 2.0 mm 1.0 mm 1.5 mm | 2.0 mm |
| A tourniquet should remain tied on a patient’s arm no longer than: 1 minute. 3 minutes. 2 minutes. 5 minutes. | 1 minute. |
| The liquid portion of whole blood that contains clotting factors is called: plasma. hemoglobin. serum. formed elements. | plasma |
| A hematoma can be caused by: excessive blind probing to locate a vein. failure to insert the needle far enough into the vein. All are correct penetration of the needle through a vein. | All are correct |
| A tourniquet should never be used when a venous blood sample is to be drawn from the hand. T True F False | F |
| The needle size most commonly used in infants and the elderly is _____. 21 gauge 20 gauge 16 gauge 23 gauge | 23 gauge |
| A needlestick is more likely to occur if a phlebotomist does which of the following? Uses standard Vacutainer equipment to obtain a specimen. Uses a needle of inappropriate gauge. All are correct Attempts to recap a needle. | Attempts to recap a needle. |
| Which type of tube should be used to collect blood specimens during a glucose tolerance test? Red topped Lavender topped Yellow topped Gray topped | Gray topped |
| A syringe is preferred over a Vacutainer collection device when: the sample must be drawn from the hand veins. the patient’s veins are fragile. All are correct many tests have been ordered, and multiple tubes must be drawn. | the patient’s veins are fragile. |
| The liquid portion of the blood that does not contains clotting factors. All are correct Serum Plasma Whole blood | Serum |
| The part of the venipuncture needle that fits into the syringe or Vacutainer adapter. Shaft Bevel Hub Retractable sheath | Hub |
| Which of the following makes up approximately 55% of blood by volume? Plasma Erythrocytes Leukocytes Thrombocytes | Plasma |
| An RBC with a normal amount of hemoglobin is said to be hyperchromic. T True F False | F |
| In emergencies, if there is no time for the laboratory to perform a type and cross-match, which type of blood is considered the universal donor? Type O Type A Type B Type AB | Type O |
| Which is considered abnormal for a fasting blood glucose level? 94 mg/dl 72 mg/dl 102 mg/dl 88 mg/dl | 88 mg/dl |
| T cells and B cells are a subclassification of which of the following? Monocytes Erythrocytes Lymphocytes Neutrophils | Lymphocytes |
| An HDL cholesterol level over 20 mg/dL is abnormal. T True F False | F |
| Which department of the laboratory performs H&H tests? Hematology Chemistry Cytology Immunology | Hematology |
| Blood type O is considered the “universal donor,” because no anti-A or anti-B antibodies are found in the plasma. T True F False | True |
| Which of the following is a normal hemoglobin for a female? 14 g/dL 9.5 g/dL 11 g/dL 17 g/dL | 14 g/dL |
| Hormones detected in a thyroid panel include: All are correct thyroxine. thyroid-stimulating hormone. triiodothyronine. | All are correct |
| Increases in the WBC count that are not related to disease are seen in pregnant women and individuals facing stress. T True F False | True |
| Plasma makes up approximately 45% of blood by volume. T True F False | False |
| Which of the following tests measures the time it takes blood to form a fibrin clot? CBC PT Hgb determination ESR | PT |
| Hemoglobin A1c is measured to monitor: hemolytic disease of the newborn. anemia. transfusion reactions. diabetes. | diabetes. |
| The smallest of the formed elements in the peripheral blood is a cell fragment that assists with clotting; it is known as a(n): platelet. red blood cells. monocyte. lymphocytes. | platelet. |
| A test that determines long-range blood glucose control is the: A1c. FBS. PT. ESR. | A1c. |
| A hematocrit reading of 37 indicates what? The patient has a hemoglobin level of 12. WBCs account for 37% of the total blood volume. RBCs account for 63% of the total blood volume. RBCs account for 37% of the total blood volume. | RBCs account for 37% of the total blood volume. |
| An RBC that is larger than normal is described as: normochromic. normocytic. macrocytic. microcytic. | macrocytic |
| The buffy coat: is a layer of thrombocytes between the plasma and cells in a centrifuged microhematocrit tube. is removed for Wright’s staining during the differential portion of the CBC. is white. | is white. |
| Microscopically, which of the following cells have large, dark, blue-black granules and contain histamine? Monocytes Lymphocytes Eosinophils Basophils | Basophils |
| Increases in the RBC count are found in which of the following? Liver disease Infection Anemia Dehydration | Dehydration |
| A low microhematocrit is seen in patients with what condition? Diabetes Anemia Inflammation Possible heart attack | Anemia |
| Which of the following tests is used for the initial screening of a patient for diabetes type 2? Blood glucose tolerance test Glycosylated hemoglobin A1c Fasting blood glucose | Fasting blood glucose |
| Which statement is true about HDL? It transports cholesterol. If elevated, it can result in a greater risk of heart disease. All are correct. It is referred to as the “bad” cholesterol. | It transports cholesterol. |
| Which of the following leukocytes are associated with allergies? Eosinophils Neutrophils Monocytes Bands | Eosinophils |
| This instrument is used to separate blood cells from plasma. Microscope Centrifuge Incubator All are correct | Centrifuge |
| A patient who has a higher than normal number of platelets is diagnosed with: leukocytosis. None are correct thrombocytosis. thrombocytopenia. | thrombocytosis. |
| Lavender-topped tubes are used for routine CBC tests. T True F False | T |
| Platelets: are fragments of a larger cell called a megakaryocyte. assist in the delivery of oxygen to tissues. None are correct are elevated in thrombocytopenia. | are fragments of a larger cell called a megakaryocyte. |
| The ESR test results: are reported in percentage per hour. are obtained with a complex, automated test. are an indicator of inflammation in the body. are diagnostic for rheumatoid arthritis. | are an indicator of inflammation in the body. |
| A blood test that analyzes the ability of the kidneys to perform their function is the: albumin levels. BUN. GTT. FBS. | BUN. |
| Which statement is true about leukocytes? All are correct. Leukocytes are the largest circulating blood cells. Granulocytes have segmented nuclei. Neutrophils are the most numerous WBCs in circulation. | All are correct. |
| After centrifugation of a microhematocrit test, which of the following will be found in the center of the tube? Plasma RBCs Serum Buffy coat | Buffy coat |
| TSH levels are assessed to determine the function of what organ(s)? Pancreas Pituitary gland Kidneys Liver | Pituitary gland |
| Increases in this test may indicate conditions such as acute and chronic infections, rheumatoid arthritis, tuberculosis, hepatitis, cancer, multiple myeloma, rheumatic fever, and lupus erythematosus. CBC PT HDL ESR | ESR |
| Which of the following is not a formed element in the blood? Platelets Red blood cells (RBCs) Plasma White blood cells (WBCs) | Plasma |
| A critical vitamin used by the liver to produce clotting factors is vitamin D. B. K A. | K |
| What is an abnormal increase in red blood cells? Polycythemia Leukocytosis Leukemia Anemia | Polycythemia |
| Which of the following is a variation in the size of the red blood cells? Anisocytosis Hematologist Hematologist Reticulocytotic | Anisocytosis |
| Hematology is the study of proteins in the blood. blood plasma. blood chemistry. formed elements in the blood and bone marrow. | formed elements in the blood and bone marrow. |
| Which of the following WBCs does not match the associated description? Neutrophil can differentiate into a T cell or B cell. Eosinophil increases in number during allergic reactions. Lymphocyte is the smallest WBC. | Neutrophil can differentiate into a T cell or B cell. |
| Which of the following is a byproduct of red blood cell breakdown and is sent to the liver? Globin Anemia Bilirubin Hemoglobin | Bilirubin |
| Which of the following test result would be and appropriate result for hematocrit? 15 mm/hour 13 g/dL 42% 1.0 INR | 42% |
| Prothrombin time may be affected by a lack of vitamin K. True False | True |
| Erythrocyte sedimentation rate is used to monitor autoimmune diseases. False True | T |
| The major component in the erythrocyte that carries oxygen is plasma. hematocrit. protein. hemoglobin. | hemoglobin. |
| Hemoglobin measures the percentage of packed red blood cells as compared to plasma. False True | F |
| Which of the following is not a granulocyte? Neutrophil Eosinophil Basophil Lymphocyte | Lymphocyte |
| Which of the following statements regarding the making and staining of a blood smear is true? Correct: When identifying cells, one should note the size, shape, and color of the blood cell, its nucleus, and its cytoplasm. | When identifying cells, one should note the size, shape, and color of the blood cell, its nucleus, and its cytoplasm. |
| Most CLIA-waived hematology tests use blood from a(n) Vacutainer. capillary. vein. artery | capillary. |
| A condition in which the RBC or hemoglobin levels are below normal Bilirubin Globin Heme Anemia Hemoglobin Hemoglobin Hemoglobin | Anemia |
| A molecule that has a reddish pigment and is capable of carrying oxygen Bilirubin Heme Globin Hemoglobin | Hemoglobin |
| A byproduct of RBC breakdown that is sent to the liver Bilirubin Anemia Hemoglobin Globin Heme | Bilirubin |
| The protein portion of the hemoglobin molecule Hemoglobin Bilirubin Heme Globin | Globin |
| The iron portion of the hemoglobin molecule Anemia Hemoglobin Heme | Heme |
| HemataSTAT Hematocrit (HCT) | Hematocrit (HCT) |
| Sediplast/Westergren/Streck Sedimentation rate | Sedimentation rate |
| Pro time Coagulation test | Coagulation test |
| HemoCue Hemoglobin (Hgb) | Hemoglobin (Hgb) |
| QBC | CBC |
| Hemoglobin | 12 to 18 g/dL |
| Hematocrit | 36% to 55% |
| ESR | 0 to 20 mm/hour |
| Pro time | 1.0 INR |
| Abnormal decrease in RBCs | Anemia |
| Abnormal decrease in WBCs | Leukopenia |
| Cancer of the WBCs | Leukemia |
| Abnormal increase in WBCs | Leukocytosis |
| Abnormal increase in RBCs | Polycythemia |
Created by:
Carepaw