Welcome to your MLT- Professional Name: Email: Phone Number: [Which of these tests are most affected if the patient is not fasting?] CBC and protime Glucose and triglycerides RA and cardiac enzymes Blood culture and thyroid profile None . [A small, gram-negative coccobacillus recovered from the CSF of a 2-year-old child gave the following results: Indole = + Glucose = + (acid) X requirement = + V requirement = + Urease = + Lactose = Neg Sucrose = Neg Hemolysis = Neg Which is the most likely identification?] Haemophilus parainfluenzae Haemophilus influenzae Haemophilus ducreyi Haemophilus aphrophilus None . [Which statement about the dry reagent strip blood test is true?] The test is based on the reaction of hemoglobin with peroxidase Abnormal color may be absent from the urine when the reaction is positive A nonhemolyzed trace is present when there are 1–2 RBCs per high-power field Salicylates cause a false-positive reaction Body fluids/Apply principles of basic laboratory None . [A patient’s blood gas results are as follows: pH = 7.26 dCO2 = 2.0 mmol/L HCO3 – = 29 mmol/L These results would be classified as:] Metabolic acidosis Metabolic alkalosis Respiratory acidosis Respiratory alkalosis None . [Review the following CBC results: WBCs = 11.0 × 109/L MCV = 85.0 fL RBCs = 3.52 × 1012/L MCH = 28.4 pg Hgb = 10.0 g/dL MCHC = 33.4% Hct = 29.9 mL/dL PLT = 155 × 109/L 12 NRBCs/100 WBCs RBC Morphology: Moderate polychromasia, 3+ target cells, few schistocytes Which of the following additional laboratory tests would yield informative diagnostic information for this patient?] Osmotic fragility Hgb electrophoresis Sugar water test Bone marrow examination None . [Referring to the Levy–Jennings chart, what analytical error is present during the second half of the month? (fig)] Shift Trend Random error Kurtosis None Comment . [Can an autologous donor donate blood on Monday, if he is having surgery on Friday?] Yes, he or she can donate up to 72 hours before surgery No, he or she cannot donate within 7 days of surgery Yes, he or she can donate, but only a half a unit No, he or she cannot donate within 5 days of surgery 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 . [MTM medium is used primarily for the selective recovery of which organism from genital specimens?] Neisseria gonorrhoeae Neisseria lactamica Neisseria sicca Neisseria flavescens 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 . 0.4 7.2 10.6 11.0 None Comment . [Which of the following conditions will prevent any migration of proteins across an electrophoretic support medium such as agarose?] Using too high a voltage Excessive current during the procedure Loss of contact between a buffer chamber and the medium Evaporation of solvent from the surface of the medium None . [John comes in to donate a unit of whole blood at the collection center of the community blood supplier. The EIA screen is reactive for anti-HIV-1/2. The test is repeated in duplicate and is nonreactive. John is:] Cleared for donation Deferred for six months Status is dependent on confirmatory test Deferred for 12 months None . 2.6 3.6 3.8 5.2 None Comment . [The electrophoretic pattern shown in the following densitometric tracing most likely indicates: (fig)] α1-Antitrypsin deficiency Infection Nephrosis Systemic sclerosis None Comment . [In gas chromatography, the elution order of volatiles is usually based upon the:] Boiling point Molecular size Carbon content Polarity None . [Which of the following structures is invaded by the genus Trichophyton?] Hair Nails Skin All of these options None . [Which of the following statements regarding ALP is true?] In normal adults, the primary tissue source is fast-twitch skeletal muscle Geriatric patients have a lower serum ALP than other adults Serum ALP levels are lower in children than in adults Pregnant women have a higher level of serum ALP than other adults None . [The modification of diet in renal disease (MDRD) formula for calculating eGFR requires which four parameters?] Urine creatinine, serum creatinine, height, weight Serum creatinine, age, gender, race Serum creatinine, height, weight, age Urine creatinine, gender, weight, age None . [A 65-year-old female outpatient was requested by her physician to submit a 24-hour urine specimen for protein and creatinine tests. He also requested testing for mycobacteria in the urine. Should the microbiology laboratory accept this 24-hour specimen for culture?] Yes, if the specimen is kept on ice Yes, if the specimen is for aerobic culture only No, the specimen must be kept at room temperature No, the specimen is unsuitable for the recovery of mycobacteria None . [Which nonpathogenic Mycobacterium specie is isolated most often from clinical specimens and is called the “tapwater bacillus”?] M. kansasii M. avium–intracellulare complex M. leprae M. gordonae 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 . [Which of the following is the reference method for measuring serum glucose?] Somogyi–Nelson Hexokinase Glucose oxidase Glucose dehydrogenase None . [The law that established national standards for the electronic exchange of protected health information in USA is:] CLIA. HIPAA. OSHA. PHS. None . [A Kleihauer–Betke acid elution test identifies 40 fetal cells in 2,000 maternal red cells. How many full doses of RhIg are indicated?] 1 2 3 4 None . [SITUATION: A patient’s biochemistry results are: ALT = 55 IU/L AST = 165 IU/L glucose = 87 mg/dL LD = 340 IU/L Na = 142 mmol/L K = 6.8 mmol/L Ca = 8.4 mg/dL Pi = 7.2 mg/dL Select the best course of action.] Report results along with an estimate of the degree of hemolysis Repeat LD but report all other results Request a new sample Dilute the serum 1:2 and repeat AST and LD None . [A serum thyroid panel reveals an increase in total T4, normal TSH, and normal free T4. What is the most likely cause of these results?] Primary hyperthyroidism Secondary hyperthyroidism Euthyroid with increased thyroxine-binding protein Subclinical hypothyroidism None . [When a therapeutic drug is suspected of causing toxicity, which specimen is the most appropriate for an initial investigation?] Trough blood sample Peak blood sample Urine at the time of symptoms Gastric fluid at the time of symptoms None . [All of the following are reasons for performing an adsorption, except:] Separation of mixtures of antibodies Removal of interfering substances Confirmation of weak antigens on red cells Identification of antibodies causing a positive DAT None . [Which of the following tests may be used to differentiate Cardiobacterium hominis from Actinobacillus spp.?] Gram stain Indole Anaerobic incubation Oxidase None . Time's up
