Welcome to your MLT- Professional Name: Email: Phone Number: [Which of the following accounts for the largest portion of the direct cost of a laboratory test?] Reagents General supplies Technologist labor Instrument depreciation None . [What is the youngest age a person can make an allogeneic whole-blood donation?] 14 15 16 17 None . [Select the main estrogen produced by the ovaries and used to evaluate ovarian function.] Estriol (E3 ) Estradiol (E2 ) Epiestriol Hydroxyestrone None . [What is the basic hematological defect seen in patients with thalassemia major?] DNA synthetic defect Hgb structure β-Chain synthesis Hgb phosphorylation None . [Capillary puncture is typically performed on adults when:] No accessible veins can be located Patients have thrombotic tendencies Veins are saved for chemotherapy All of the above None . [Which of the following statements regarding the classical nitroprusside reaction for ketones is true?] The reaction is most sensitive to acetone Nitroprusside reacts with acetone, AAA, and B-hydroxybutyric acid It may be falsely positive in phenylketonuria The reaction is recommended for diagnosing ketoacidosis None . [All of the following genera are anaerobic cocci that stain gram positive except:] Peptococcus spp. Peptostreptococcus spp. Streptococcus spp. Veillonella spp. None . [Which disease is least likely when a nucleolar pattern occurs in an immunofluorescence test for antinuclear antibodies?] MCTD Sjögren’s syndrome SLE Scleroderma None . [Which test typically requires a refrigerated stool specimen?] Fecal fat Guaiac Occult blood Ova and parasites None . [Which of the following tests should be done first in order to differentiate Aeromonas spp. from the Enterobacteriaceae?] Urease OF glucose Oxidase Catalase None . [A tourniquet is used in venipuncture to:] concentrate the blood specimen. find and enter veins more easily. keep the vein from collapsing. all of the above. None . [When the arm of the patient is swollen with excess fluids, the condition is called] edema. hemoconcentration. icterus. syncope. None . [Which type of monochromator produces the purest monochromatic light in the UV range?] A diffraction grating and a fixed exit slit A sharp cutoff filter and a variable exit slit Interference filters and a variable exit slit A prism and a variable exit slit None . [Which of the following findings is consistent with a subarachnoid hemorrhage rather than a traumatic tap?] Clearing of the fluid as it is aspirated A clear supernatant after centrifugation Xanthochromia Presence of a clot in the sample None . [Which is the correct sequence of events after blood vessel injury?] Fibrinolysis, platelet adhesion, vasoconstriction Platelet aggregation, vasoconstriction, fibrin clot formation Vasoconstriction, platelet aggregation, fibrin clot formation Vasodilation, platelet adhesion, fibrin clot formation None . [Which of the following is proper procedure when dealing with an elderly patient?] Address your questions to an attendant if the patient has a hearing problem. Make certain to hold adequate pressure after the draw until bleeding stops. Speak extra loud in order to be certain that the patient can hear you. Tie the tourniquet extra tight to make the veins more prominent. None . [What type of detector is used in high-performance liquid chromatography with electrochemical detection (HPLC–ECD)?] Calomel electrode Conductivity electrode Glassy carbon electrode Polarographic electrode None . [A type and screen was performed on a 32-year-old woman, and the patient was typed as AB negative. There are no AB-negative units in the blood bank. What should be done?] Order AB-negative units from a blood supplier Check inventory of A-, B-, and O-negative units Ask the patient to make a preoperative autologous donation Nothing—the blood will probably not be used None . [What is the pH of a solution of HNO3, if the hydrogen ion concentration is 2.5 × 10^–2 M?] 1.0 1.6 2.5 2.8 None Comment . [Which of the following conditions is associated with hyperuricemia?] Renal failure Chronic liver disease Xanthine oxidase deficiency Paget’s disease of the bone None . [The following supplies were gathered for a routine venipuncture. Which item is incorrect?] ETS tubes Iodine swab Safety needle Tourniquet None . [Which of the following statements regarding cells found in urinary sediment is true?] Transitional cells resist swelling in hypotonic urine Renal tubular cells are often polyhedral and have an eccentric round nucleus Trichomonads have an oval shape with a prominent nucleus and a single anterior flagellum Clumps of bacteria are frequently mistaken for blood casts None . [A unit of packed RBCs is split using the open system. One of the half units is used. What may be done with the second half unit?] Must be issued within 24 hours Must be issued within 48 hours Must be irradiated Retains the original expiration date 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 . [SITUATION: An O-negative mother gave birth to a B-positive infant. The mother had no history of antibodies or transfusion. This was her first child. The baby was mildly jaundiced and the DAT weakly positive with polyspecific antisera. What could have caused the positive DAT?] Anti-D from the mother coating the infant red cells An alloantibody, such as anti-K, coating the infant red cells Maternal anti-B coating the infant cells Maternal anti-A, B coating the infant cells None . [What is the recommended troponin T and I cutoff (upper limit of normal) for detecting myocardial infarction?] The cutoff varies with the method of assay but should be no lower than 0.2 ng/mL The upper 99th percentile or lowest level that can be measured with 10% CV The concentration corresponding to the lowest level of calibrator used The highest value fitting under the area of the curve for the 95% confidence interval None . [Informed consent means that a:] nurse has the right to perform a procedure on a patient even if the patient refuses. patient agrees to a procedure after being told of the consequences associated with it. patient has the right to look at all his or her medical records and test results. phlebotomist tells the patient what is ordered and the implications of the test results. None . [A specimen from a 15-year-old female burn patient was cultured after debridement, and the following results were obtained: Oxidase = + Lysine decarboxylase = Neg Catalase = + Motility = + Ornithine decarboxylase Glucose = + for oxidation = Neg (open tube) Arginine dihydrolase = + Maltose = Neg for oxidation (open tube) Penicillin = Resistant Aminoglycosides = Susceptible Colistin (Polymixin B) = Susceptible These results indicate which of the following organisms?] Acinetobacter baumannii Moraxella lacunata Pseudomonas aeruginosa Acinetobacter lwoffii None . [Which of the following tests should be used to differentiate Staphylococcus aureus from Staphylococcus intermedius?] Acetoin Catalase Slide coagulase test Urease None . [Given the following serum electrolyte data, determine the anion gap. Na = 132 mmol/L Cl = 90 mmol/L HCO3 – = 22 mmol/L] 12 mmol/L 20 mmol/L 64 mmol/L Cannot be determined from the information provided None . Time's up
