Welcome to your MLT- Professional Name: Email: Phone Number: [When measuring trace metals in blood other than lead, what type of tube should be used?] Navy blue top Green top Purple top Red top None . [What is the principle of the colorimetric reagent strip determination of SG in urine?] Ionic strength alters the pKa of a polyelectrolyte Sodium and other cations are chelated by a ligand that changes color Anions displace a pH indicator from a mordant, making it water soluble Ionized solutes catalyze oxidation of an azo dye None . [Staphylococcus epidermidis (coagulase negative) is recovered from which of the following sources?] Prosthetic heart valves Intravenous catheters Urinary tract All of these options None . [Which statement regarding creatinine is true?] Serum levels are elevated in early renal disease High serum levels result from reduced glomerular filtration Serum creatine has the same diagnostic utility as serum creatinine Serum creatinine is a more sensitive measure of renal function than creatinine clearance None . [The detection of precipitation reactions depends on the presence of optimal proportions of antigen and antibody. A patient’s sample contains a large amount of antibody, but the reaction in a test system containing antigen is negative. What has happened?] Performance error Low specificity A shift in the zone of equivalence Prozone phenomenon None . [What is the PCO2 if the dCO2 is 1.8 mmol/L?] 24 mm Hg 35 mm Hg 60 mm Hg 72 mm Hg None . [Which of the following conditions is often a cause of glomerulonephritis?] Hypertension Cytomegalovirus infection Systemic lupus erythematosus Heavy metal poisoning None . [Storage iron is usually best determined by:] Serum transferrin levels Hgb values Myoglobin values Serum ferritin levels None . [The Coulter principle for counting of cells is based upon the fact that:] Isotonic solutions conduct electricity better than cells do Conductivity varies proportionally to the number of cells Cells conduct electricity better than saline does Isotonic solutions cannot conduct electricity None . [Which of the following enzymes is usually depressed in liver disease?] Elastase-1 GLD Pseudocholinesterase Aldolase None . [In addition to morphology, cytochemistry, and immunophenotyping, the WHO classification of myelo- and lymphoproliferative disorders is based upon which characteristic?] Proteomics Cytogenetic abnormalities Carbohydrate-associated tumor antigen production Cell signaling and adhesion markers None . [What is the clinical utility of testing for serum prealbumin?] Low levels are associated with increased free cortisol High levels are an indicator of acute inflammation Serial low levels indicate compromised nutritional status Levels correlate with glomerular injury in patients with diabetes mellitus None . [For which clinical specimens is the KOH direct mount technique for examination of fungal elements used?] Skin CSF Blood Bone marrow None . [Fecal immunoassays have become more commonly used to diagnose infections with:] Endolimax nana and Blastocystis hominis Giardia lamblia and Cryptosporidium spp. Ascaris lumbricoides and Trichuris trichiura Strongyloides stercoralis and Trichomonas vaginalis None . [Which of the following is the reference method for measuring serum glucose?] Somogyi–Nelson Hexokinase Glucose oxidase Glucose dehydrogenase None . [Argatroban may be used as an anticoagulant drug in patients with:] DVT Hemorrhage TTP Thrombocytosis None . [What effect does hematocrit have on POCT tests for whole-blood glucose monitoring?] Low hematocrit decreases glucose readings on all devices High hematocrit raises glucose readings on all devices The effect is variable and dependent on the enzyme/coenzyme system Low hematocrit raises readings and high hematocrit lowers readings unless corrected None . [What reaction would be the same for an A1 and an A2 person?] Positive reaction with anti-A1 lectin Positive reaction with A1 cells Equal reaction with anti-H Positive reaction with anti-A,B None . Osmotic fragility Hgb electrophoresis Sugar water test Bone marrow examination None [In which condition is the measurement of acid phosphatase clinically useful?] Measuring the prostatic isoenzyme to screen for prostate cancer Measuring the enzyme in a vaginal swab extract The diagnosis of hemolytic anemia As a marker for bone regeneration None . [Which of the following conditions is cause for rejecting an analytical run?] Two consecutive controls greater than 2 s above or below the mean Three consecutive controls greater than 1 s above the mean Four controls steadily increasing in value but less than ±1 s from the mean One control above +1 s and the other below –1 s from the mean None . [Which test typically requires a refrigerated stool specimen?] Fecal fat Guaiac Occult blood Ova and parasites 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 . [Which statement concerning non-Forssman heterophile antibody is true?] It is not absorbed by guinea pig antigen It is absorbed by guinea pig antigen It does not agglutinate horse RBCs It does not agglutinate sheep RBCs None . [According to federal and state regulations, a hospital’s capital budget should include which of the following before projects that cost $150,000 can be submitted for approval?] A time table of completion A cost analysis Salaries and wages for new employees A certificate of need None . [Which genera of Enterobacteriaceae are usually nonmotile at 36°C?] Shigella, Klebsiella, and Yersinia Escherichia, Edwardsiella, and Enterobacter Proteus, Providencia, and Salmonella Serratia, Morganella, and Hafnia None . [In the Oliver–Rosalki method, the reverse reaction is used to measure CK activity. The enzyme(s) used in the coupling reactions is (are):] Hexokinase and G-6-PD Pyruvate kinase and LD Luciferase Adenylate kinase None . [Upon which principle is the biuret method based?] The reaction of phenolic groups with CuIISO4 Coordinate bonds between Cu+2 and carbonyl and imine groups of peptide bonds. The protein error of indicator effect producing color when dyes bind protein The reaction of phosphomolybdic acid with protein None . [Which of the following conditions is associated with a chylous effusion?] Necrosis Pulmonary infarction or infection Systemic lupus erythematosus or rheumatoid arthritis Lymphatic obstruction None . [A 15-year-old female complained of a severe eye irritation after removing her soft-contact lenses. A swab of the infected right eye was obtained by an ophthalmologist, who ordered a culture and sensitivity test. The culture was plated on blood agar and MacConkey agar. At 24 hours, growth of a gram-negative rod that tested positive for cytochrome oxidase was noted. The Mueller–Hinton sensitivity plate showed a bluish-green “lawn” of growth that proved highly resistant to most of the antibiotics tested except amikacin, tobramycin, and ciprofloxacin. What is the most likely identification?] Burkholderia cepacia Pseudomonas aeruginosa Stenotrophomonas maltophilia Acinetobacter baumannii None . Time's up
