New Quiz 26 Jan Welcome to your MLT- Professional Name: Email: Phone Number: [PV is characterized by:] Increased plasma volume Pancytopenia Decreased oxygen saturation Absolute increase in total red cell mass None . [When measuring calcium with the complexometric dye o-cresolphthalein complexone, magnesium is kept from interfering by:] Using an alkaline pH Adding 8-hydroxyquinoline Measuring at 450 nm Complexing to EDTA None . [Which of the following conditions is classified as normochloremic acidosis?] Diabetic ketoacidosis Chronic pulmonary obstruction Uremic acidosis Diarrhea None . [The major difference between plasma and serum is that plasma:] contains fibrinogen, serum does not. contains nutrients, serum does not. looks clear, serum looks cloudy. looks amber, serum looks pale yellow. None . [Which laboratory test is affected by heparin therapy?] Thrombin time Fibrinogen assay Protein C assay Protein S assay None . [What is the expiration of cryoprecipitate once pooled?] 4 hours 6 hours 8 hours 24 hours None . [Which hepatitis B markers should be performed on blood products?] HBsAg and anti-HBc Anti-HBs and anti-HBc HBeAg and HBcAg Anti-HBs and HBeAg None . [In general, which statement best characterizes the relationship between white blood cells and light scattering in flow cytometry?] Forward scatter is related to cell size and side scatter to granularity Forward scatter is related to nuclear density and side scatter to size Forward scatter is inversely related to size and side scatter is directly related to size Forward scatter is related to shape and side scatter to size None . [Hemoglobin in urine can be differentiated from myoglobin using:] 80% ammonium sulfate to precipitate hemoglobin Sodium dithionite to reduce hemoglobin o-Dianisidine instead of benzidine as the color indicator The dry reagent strip blood test None . [Plate 35 is from a Wright’s-stained peripheral blood film, 1,000×. Which description of the RBC morphology and platelets is correct?] Microcytic, hypochromic with marked poikilocytosis and increased platelets Macrocytic, hypochromic with marked anisocytosis and normal platelets Normocytic, normochromic with mild poikilocytosis and increased platelets Microcytic, hypochromic, with mild anisocytosis and normal platelets None Comment . [Which of the following tests is consistently abnormal in osteoporosis?] High urinary calcium High serum Pi Low serum calcium High urine or serum N-telopeptide of type 1 collagen None . [Which of the following plots is best for detecting all types of QC errors? ] Levy–Jennings Tonks–Youden Cusum Linear regression None Comment . [All of the following statements regarding FFP are true, except:] FFP must be prepared within 24 hours of collection After thawing, FFP must be transfused within 24 hours Storage temperature for FFP with a 1-year shelf life is ≤−18°C When thawed, FFP must be stored between 1°C–6°C None . [Which anemia is characterized by a lack of intrinsic factor that prevents B12 absorption?] Tropical sprue Transcobalamin deficiency Blind loop syndrome Pernicious anemia None . [The four essential functions of a manager are:] Staffing, decision making, cost analysis, evaluating Directing, leading, forecasting, implementing Planning, organizing, directing, controlling Innovating, designing, coordinating, problem solving None . [Hyperparathyroidism is most consistently associated with:] Hypocalcemia Hypocalciuria Hypophosphatemia Metabolic alkalosis None . [An APTT test is performed on a patient and the result is 50 sec (reference range 27–37 sec). The instrument flags the result owing to failure of the delta check. The patient had an APTT of 35 sec the previous day. The technologist calls the nursing unit to check whether the patient is on heparin therapy. The patient is not receiving heparin. What is the next appropriate step?] Check the family history for an inherited factor VIII deficiency Check to see if the patient has received any other anticoagulant medications Perform mixing studies Perform a factor VIII assay None . [The phrase “first-pass hepatic metabolism” means that:] One hundred percent of a drug is excreted by the liver All drug is inactivated by hepatic enzymes after one pass through the liver Some drug is metabolized from the portal circulation, reducing bioavailability The drug must be metabolized in the liver to an active form None . [In monitoring an HIV-infected patient, which parameter may be expected to be the most sensitive indicator of the effectiveness of antiretroviral treatment?] HIV antibody titer CD4:CD8 ratio HIV viral load Absolute total T-cell count None . [In an outbreak of diarrheal disease traced to a municipal water supply, the most likely causative agent is:] Cryptosporidium spp. Cystoisospora belli Entamoeba histolytica Dientamoeba fragilis None . [A female patient at 28 weeks’ gestation yields the following results: Patient cells: Anti-A, 3+ Anti-B, 4+ Patient serum: A1 cells, neg B cells, 1+ O cells, 1+ Which of the following could be causing the ABO discrepancy?] Hypogammaglobulinemia Alloantibody in patient serum Acquired B Weak subgroup None . [A patient has several short lengths of IV-type tubing protruding from his chest. This is most likely a/an] A-line. CVC. implanted port. PICC. None . [The miracidial hatching test helps to demonstrate the viability of eggs of:] Taenia species Schistosoma species Hookworm species Opisthorchis species None . [What is the clinical significance of K-ras testing?] K-Ras mutations make tumor cells more susceptible to chemotherapy K-Ras is a tumor suppressor gene and mutations are associated with increased lifetime risk of malignancy K-Ras mutations result in treatment resistance to growth factor receptor inhibitors K-Ras is used to identify the tissue of origin None . [The k (Cellano) antigen is a high-frequency antigen and is found on most red cells. How often would one expect to find the corresponding antibody?] Often, because it is a high frequency antibody Rarely, because most individuals have the antigen and therefore would not develop the antibody It depends upon the population, because certain racial and ethnic groups show a higher frequency of anti-k Impossible to determine without consulting regional blood group antigen charts None . [You are in the process of collecting a specimen by venipuncture. You hear a hissing sound, there is a spurt of blood into the tube, and blood flow stops. What has most likely happened? ] Reflux of tube contents. The needle went too deep. The vein has collapsed. Tube vacuum escaped. None . [Which of the following results are discrepant?] Small blood but negative protein Moderate blood but no RBCs in microscopic exam Negative blood but 6–10 RBCs/HPF Negative blood, positive protein None . [Which of the following enzymes is a transferase?] ALP CK Amylase LD None . [When making a routine blood smear, the “pusher slide” is normally used at an angle of how many degrees?] 15 30 45 60 None . [A cord blood workup was ordered on Baby Boy Jones. The mother is O negative. Results on the baby are as follows: Anti-A Anti-B Anti-A, B Anti-D DAT (poly) 4+ 0 4+ 0 2+ The test for weak D was positive at AHG. Is the mother an RhIg candidate?] No, the baby is Rh positive Yes, the baby’s Rh type cannot be determined due to the positive DAT No, the baby is Rh negative Yes, the mother is Rh negative None . Time's up
