Welcome to your MLT- Professional Name: Email: Phone Number: [A patient received 5 units of fresh frozen plasma (FFP) and developed a severe anaphylactic reaction. He has a history of respiratory and gastrointestinal infections. Post-transfusion studies showed all 5 units to be ABO-compatible. What immunologic test would help to determine the cause of this transfusion reaction?] Complement levels, particularly C3 and C4 Flow cytometry for T-cell counts Measurement of immunoglobulins NBT test for phagocytic function None . [Select the most appropriate adult reference range for fasting blood glucose.] 40–105 mg/dL (2.22–5.82 mmol/L) 60–140 mg/dL (3.33–7.77 mmol/L) 65–99 mg/dL (3.61–5.50 mmol/L) 75–150 mg/dL (4.16–8.32 mmol/L) None . [Which crystal appears in urine as a long, thin hexagonal plate, and is linked to ingestion of large amounts of benzoic acid?] Cystine Hippuric acid Oxalic acid Uric acid None . [What effect does selecting the wrong gate have on the results when cells are counted by flow cytometry?] No effect Failure to count the desired cell population Falsely elevated results Impossible to determine None . [Sudoriferous glands are] connected to hair follicles. endocrine system structures. referred to as sweat glands. responsible for goose bumps. None . [A dehydrated 25-year-old male patient was admitted to the hospital with symptoms similar to those of chronic fatigue syndrome. Serological testing proved negative for recent streptococcal infection, Epstein–Barr virus, and hepatitis. Which of the following viral serological tests should help with a possible diagnosis?] CMV Echovirus Respiratory syncytial virus Measles virus None . [A bloody stool cultured from a 26-year-old woman after 3 days of severe diarrhea showed the following results at 48 hours after being plated on the following media: MacConkey agar: little normal flora with many non–lactose-fermenting colonies Hektoen enteric agar: many blue-green colonies Campylobacter blood agar and C. difficile agar: no growth Clear colonies (from MacConkey agar) tested negative for oxidase, indole, urease, motility, and H2S The most likely identification is:] Shigella spp. Salmonella spp. Proteus spp. E. coli None . [What component of a freezing point osmometer measures the sample temperature?] Thermistor Thermocouple Capacitor Electrode None . [Autoagglutination of red cells at room temperature can cause which of the following abnormal test results?] Low RBC count High MCV Low hematocrit All of these options None . [A leg-wound culture from a hospitalized 70-year-old diabetic man grew motile, lactose-negative colonies on MacConkey agar. Given the following biochemical reactions at 24 hours, what is the most probable organism? H2S (TSI) = Neg Indole = Neg MR = Neg VP = + DNase = + Citrate = + Urease = Neg Phenylalanine deaminase = Neg Ornithine and lysine decarboxylase = + Arginine decarboxylase = Neg Gelatin hydrolysis = +] Proteus vulgaris Serratia marcescens Proteus mirabilis Enterobacter cloacae None . [Egg yolk agar is used to detect which enzyme produced by Clostridium species?] Lecithinase β-Lactamase Catalase Oxidase None . [A clinical test used for the detection and identification of viral infections other than culture is:] Hemagglutination Hemadsorption Viral antigen detection All of these options None . [“Six sigma” is a method used in industry and business as well as the clinical laboratory in order to:] Allow for improved performance Prevent and remove defects in production Improve customer satisfaction All of these options None . [Protein microarray analysis requires the use of which of the following techniques to generate protein profile data?] Electrophoresis Mass spectroscopy Thin-layer chromatography Gas chromatography None . [A 2 p.m. urinalysis has a trace glucose by the dry reagent strip test. A fasting blood glucose drawn 8 hours earlier is 100 mg/dL. No other results are abnormal. Select the most appropriate course of action.] Repeat the urine glucose and report if positive Perform a test for reducing sugars and report the result Perform a quantitative urine glucose; report as trace if greater than 100 mg/dL Request a new urine specimen None . [What type of muscle lines the walls of blood vessels?] Cardiac Skeletal Striated Visceral None . [After arriving in the laboratory, all specimens are immediately:] centrifuged to stop glycolysis. logged in or accessioned. refrigerated until processed. uploaded to testing instruments. None . [Which statement about synovial fluid in RA is true?] Synovial/serum IgG is usually 1:2 or higher Total hemolytic complement is elevated Ninety percent of RA cases test positive for rheumatoid factor in synovial fluid Demonstration of rheumatoid factor in joint fluid is diagnostic for RA None . [Plate 53 shows a urinary sediment under 400× magnification stained with Sternheimer–Malbin stain. What is the large cell in the lower right of the field?] WBC Transitional epithelial cell Renal epithelial cell Squamous epithelial cell None Comment . [The serum TSH level is almost absent in:] Primary hyperthyroidism Primary hypothyroidism Secondary hyperthyroidism Euthyroid sick syndrome None . [Which method, classically used for HLA-D typing, is often used to determine the compatibility between a living organ donor and recipient?] Flow cytometry Mixed lymphocyte culture (MLC) Primed lymphocyte test (PLT) Restriction fragment length polymorphism (RFLP) None . [A donor was found to contain anti-K using pilot tubes from the collection procedure. How would this affect the compatibility test?] The AHG major crossmatch would be positive The IS (immediate spin) major crossmatch would be positive The recipient’s antibody screen would be positive for anti-K Compatibility testing would not be affected None . [A bleeding-time test detects:] alcohol concentration. diabetes mellitus. platelet function disorders. septicemia toxins. None . [Which is the major Hgb found in the RBCs of patients with sickle cell trait?] Hgb S Hgb F Hgb A2 Hgb A None . [A Mycobacterium species recovered from a patient with AIDS gave the following results: Niacin = Neg T2H = + Tween 80 hydrolysis = Neg Nitrate reduction = Neg Heat-stable catalase (68°C) = +- Nonphotochromogen What is the most likely identification?] M. gordonae M. bovis M. avium–intracellulare complex M. kansasii None . [A patient with a vitamin B12 anemia is given a high dosage of folate. Which of the following is expected as a result of this treatment?] An improvement in neurological problems An improvement in hematological abnormalities No expected improvement Toxicity of the liver and kidneys None . [You are about to perform routine venipuncture on a patient with no known allergy to antiseptics. Which of the following substances would you use to clean the site?] 5.25% sodium hypochlorite 70% isopropyl alcohol Antibacterial soap and water Povidone–iodine None . [An automated electronic blood cell counter was used to count RBCs and WBCs in a turbid pleural fluid sample. The WBC count was 5 × 10^10/L (50,000/μL) and the RBC count was 5.5 × 10^10/L (55,000/ μL). What is the significance of the RBC count?] The RBC count is not significant and should be reported as 5,000/μL The RBC count should be reported as determined by the analyzer A manual RBC count should be performed A manual RBC and WBC count should be performed and reported instead None Comment . [The purpose of the modified Allen test is to determine:] blood pressure in the ulnar artery. if collateral circulation is present. if the patient is absorbing oxygen. the clotting time of both arteries. None . [According to CLSI guidelines, serum for most tests should be removed from the cells within:] 30 minutes. 60 minutes. 90 minutes. 120 minutes. None . Time's up
