New Quiz 10 Dec Welcome to your MLT- Professional Name: Email: Phone Number: [Which group of tests best identifies the Morganella and Proteus genera?] Motility, urease, and phenylalanine deaminase Malonate, glucose fermentation, and deoxyribonuclease (DNase) Indole, oxidase, MR, and VP Indole, citrate, and urease None . [Which instrument requires a primary and secondary monochromator?] Spectrophotometer Atomic absorption spectrophotometer Fluorometer Nephelometer None . [Which nonblood specimen is most frequently analyzed in the lab?] CSF Pleural fluid Synovial fluid Urine None . [Gram stain of a smear taken from the periodontal pockets of a 30-year-old man with poor dental hygiene showed sulfur granules containing gram-positive rods (short diphtheroids and some unbranched filaments). Colonies on blood agar resembled “molar teeth” in formation. The most likely organism is:] Actinomyces israelii Propionibacterium acnes Staphylococcus intermedius Peptostreptococcus anaerobius None . [What constitutes a diagnosis of viral hepatitis?] Abnormal test results for liver enzymes Clinical signs and symptoms Positive results for hepatitis markers All of these options None . [Which of the statements below regarding the methods of Henry for AST and ALT is correct?] Hemolysis will cause positive interference in both AST and ALT assays Loss of activity occurs if samples are frozen at –20°C The absorbance at the start of the reaction should not exceed 1.0 A Reaction rates are unaffected by addition of P-5´-P to the substrate None . [Maslow’s theory of management is based upon:] The premise that all workers are unmotivated A pyramid of goals for the satisfaction of employee needs Use of detractors and perks to keep employees happy The professional development of the employee None . [Which test is used to distinguish Cushing’s disease (pituitary Cushing’s) from Cushing’s syndrome caused by adrenal tumors?] Low-dose overnight dexamethasone suppression Petrosal sinus sampling Serum ACTH Twenty-four–hour urinary free cortisol None . [The Wiener nomenclature for the E antigen is:] hr´ hrv´ rh˝ Rh0 None . [Which antibody is associated with paroxysmal cold hemoglobinuria (PCH)?] Anti-I Anti-i Anti-M Anti-P None . [Urine production of less than 400 mL/day is:] Consistent with normal renal function and H2O balance Termed isosthenuria Defined as oliguria Associated with diabetes mellitus None . [An 18-month-old boy has recurrent sinopulmonary infections and septicemia. Bruton’s X-linked immunodeficiency syndrome is suspected. Which test result would be markedly decreased?] Serum IgG, IgA, and IgM Total T-cell count Both B- and T-cell counts Lymphocyte proliferation with phytohemagglutinin stimulation None . [Semisolid transport media such as Amies, Stuart, or Cary–Blair are suitable for the transport of swabs for culture of most pathogens except:] Neisseria gonorrhoeae Enterobacteriaceae Campylobacter fetus Streptococcus pneumoniae None . [Select the main estrogen produced by the ovaries and used to evaluate ovarian function.] Estriol (E3 ) Estradiol (E2 ) Epiestriol Hydroxyestrone None . [Which reagent(s) is (are) used to develop the red color indicative of a positive reaction in the nitrate reduction test?] Sulfanilic acid and α-naphthylamine Ehrlich’s and Kovac’s reagents o-Nitrophenyl-β-D-galactopyranoside Kovac’s reagent None . [Oocysts of Cryptosporidium spp. can be detected in stool specimens using:] Modified Ziehl–Neelsen acid-fast stain Gram stain Methenamine silver stain Trichrome stain None . [The bile solubility test causes the lysis of:] Streptococcus bovis colonies on a blood agar plate Streptococcus pneumoniae colonies on a blood agar plate Group A streptococci in broth culture Group B streptococci in broth culture None . [A 25-year-old woman saw her physician with symptoms of jaundice, acute cholecystitis, and an enlarged spleen. On investigation, numerous gallstones were discovered. Review the following CBC results:WBCs = 11.1 × 10^9/L MCV = 100 fLRBCs = 3.33 × 10^12/L MCH = 34.5 pgHgb = 11.5 g/dL MCHC = 37.5%Hct = 31.6 mL/dL PLT = 448 × 10^9/LWBC differential: 13 band neutrophils; 65 segmented neutrophils; 15 lymphocytes; 6 monocytes; 1 eosinophil RBC morphology: 3+ spherocytes, 1+ polychromasiaWhat follow-up laboratory test would provide valuable information for this patient?] Osmotic fragility Hgb electrophoresis G6PD assay Methemoglobin reduction test None Comment . [A patient is being seen in the emergency department for a low-grade fever, headache, and general malaise after returning from Africa on a photographic safari. The physician has requested blood for malaria; the laboratory would like to have patient information regarding:] Specific travel history and body temperature every 4 hours Liver function tests and prophylactic medication history Transfusion history and body temperature every 4 hours Prophylactic medication history and specific travel history None . [Convert 2.0 mEq/L magnesium (atomic weight = 24.3) to milligrams per deciliter.] 0.8 mg/dL 1.2 mg/dL 2.4 mg/dL 4.9 mg/dL None . [What would be the most likely designation by the WHO for the FAB AML M2 by the French–American–British classification?] AML with t(15;17) AML with mixed lineage AML with t(8;21) AML with inv(16) None . [The NPSGs are the:] CLSI’s voluntary standards and guidelines. Commission’s annual safety requirement goals. NAACLS national educational guidelines. safety rules set down by CDC and OSHA. None . [Which of the following hormones promotes hyperglycemia?] Calcitonin Growth hormone Aldosterone Renin None . [Which of the following antibodies characteristically gives a refractile mixed-field appearance?] Anti-K Anti-Dia Anti-Sda Anti-s None . [Which of the following dyes are used in Sternheimer–Malbin stain?] Hematoxylin and eosin Crystal violet and safranin Methylene blue and eosin Methylene blue and safranin None . [Which of the following Mycobacterium spp. is best differentiated by the rapid hydrolysis of Tween 80?] M. fortuitum M. chelonae M. kansasii M. gordonae None . [Distance, time, and shielding are principles of:] BBP safety. electrical safety. fire safety. radiation safety. None . [Which of the following blood specimens should be transported in an ice slurry?] BUN and creatinine Cold agglutinin and bilirubin Glucose and electrolytes Homocysteine and rennin None . [During the summer break, several middle-aged elementary school teachers from the same school district attended a 3-day seminar in Chicago. Upon returning home, three female teachers from the group were hospitalized with pneumonia, flulike symptoms, and a nonproductive cough. Routine testing of sputum samples revealed normal flora. Further testing using buffered CYE agar with L-cysteine and a-ketoglutarate in 5% CO2 produced growth of opaque colonies that stained faintly, showing thin gram-negative rods. What is the most likely identification?] Legionella pneumophila Haemophilus influenzae Eikenella corrodens Streptococcus pneumoniae None . [A patient’s blood gas results are: pH = 7.50 PCO2 = 55 mm Hg HCO3– = 40 mmol/L These results indicate:] Respiratory acidosis Metabolic alkalosis Respiratory alkalosis Metabolic acidosis None . Time's up
