Welcome to your MLT- Professional Name: Email: Phone Number: [The_________ is the oldest and largest healthcare standards–setting body in the nation.] American Medical Society Center for Medicare and Medicaid College of American Pathologists Joint Commission None . [Which of the adult CSF values in the following table are consistent with bacterial meningitis? WBCs Lymphocytes Monocytes Eosinophils Neutrophils Neuroectodermal Cells] 50/ μL 44% 55% 0% 0% 1% 300/μL 75% 21% 3% 0% 1% 2,000/μL 5% 15% 0% 80% 0% 2,500/μL 40% 50% 0% 10% 0% None . [What is the PO2 of calibration gas containing 20.0% O2, when the barometric pressure is 30 in.?] 60 mm Hg 86 mm Hg 143 mm Hg 152 mm Hg None . [Removing a unit of blood from a patient and not replacing it is used as a treatment for:] arthritis. leukemia. polycythemia. tuberculosis. None . [Which of the following contributes to SG, but not to osmolality?] Protein Salt Urea Glucose None . [The results shown in the table above are obtained from three consecutive serum samples using an automated random access analyzer that samples directly from a bar-coded tube. Calibration and QC performed at the start of the shift are within the acceptable range, and no error codes are reported by the analyzer for any tests on the three samples. Upon results verification, what is the most appropriate course of action?] Report the results and proceed with other tests since no analytical problems are noted Repeat the controls before continuing with further testing, but report the results Check sample identification prior to reporting Do not report BUN results for these patients or continue BUN testing None . [In addition to the number of true negatives (TN), which of the following measurements is needed to calculate specificity?] True positives Prevalence False negatives False positives None . [In which circumstances is a validation study (versus performing routine quality control) required?] Instrument recalibration Source lamp or ion selective electrode change Change in reagent lot Change in calibrator lot None . [SITUATION: A pregnant women was seen by her obstetrician with signs of flulike illness during her second trimester. NAT tests were ordered for Toxoplasma gondii, rubella, cytomegalovirus, and herpes simplex 1 and 2. All test results were negative. However, after delivery, the newborn exhibited signs of an infection and failed to survive. Which virus causes a 90% transplacental infection rate when found in the mother?] Hepatitis A Hepatitis B Hepatitis D Hepatitis G None . [Which of the following is referred to as an endogenous activator of plasminogen?] Streptokinase Transamidase Tissue plasminogen activator Tissue plasminogen activator inhibitor None . [Cysts of Iodamoeba bütschlii typically have:] Chromatoidal bars with rounded ends A heavily vacuolated cytoplasm A large glycogen vacuole Many ingested bacteria and yeast cells None . [Plate 49 is a Wright’s-stained peripheral blood film, 1,000×. What is the most appropriate classification of the WBCs seen in this field?] Lymphoblasts Myeloblasts Promyelocytes Prolymphocytes None Comment . [A 24-hour urine sample from an adult submitted for catecholamines gives a result of 140 μg/day (upper reference limit 150 μg/day). The 24-hour urine creatinine level is 0.6 g/day. Select the best course of action.] Check the urine pH to verify that it is less than 2.0 Report the result in μg catecholamines per mg creatinine Request a new 24-hour urine sample Measure the VMA and report the catecholamine result only if elevated None . [On Panel 2, which of the following antibodies could not be ruled out?] Anti-Jk^b Anti-C Anti-M Anti-Fy^b None Comment . 2.6 3.6 3.8 5.2 None Comment . [An Entamoeba histolytica trophozoite has the following characteristics:] Central karyosome in the nucleus, ingested RBCs, and clear pseudopodia Ingested RBCs, clear pseudopodia, and uneven chromatin on the nuclear membrane Ingested RBCs, clear pseudopodia, and large glycogen vacuoles in cytoplasm Large, blotlike karyosome, ingested white blood cells (WBCs), and granular pseudopods None . [The transverse plane divides the body:] diagonally into upper and lower portions. horizontally into upper and lower portions. vertically into front and back portions. vertically into right and left portions. None . [Which of the following statements regarding the naming of transaminases is true?] Serum glutamic oxaloacetic transaminase (SGOT) is the older abbreviation for ALT Serum glutamic pyruvic transaminase (SGPT) is the older abbreviation for AST SGPT is the older abbreviation for ALT SGOT is the newer abbreviation for AST None . [A cerebrospinal fluid sample from an 8-year-old child with a fever of unknown origin was tested for glucose, total protein, lactate, and IgG index. The glucose was 180 mg/dL but all other results were within the reference range. The CSF WBC count was 9 × 10^6/L and the RBC count was 10 × 10^6/L. The differential showed 50% lymphocytes, 35% monocytes, 10% macrophages, 3% neutrophils, and 2% neuroectodermal cells. What is the most likely cause of these results?] Aseptic meningitis Traumatic tap Subarachnoid hemorrhage Hyperglycemia None Comment . [In absorption spectrophotometry:] Absorbance is directly proportional to transmittance Percent transmittance is directly proportional to concentration Percent transmittance is directly proportional to the light path length Absorbance is directly proportional to concentration None . [When performing a factor VIII activity assay, a patient’s plasma is mixed with:] Normal patient’s plasma Factor VIII deficient plasma Plasma with a high concentration of factor VIII Normal control plasma None . [The following results were observed by using a tube coagulase test: Coagulase at 4 hours = + Coagulase at 18 hours = Neg DNase = + Novobiocin = Sensitive (16-mm zone) Hemolysis on blood Mannitol salt plate = + agar = β (acid production) What is the most probable identification?] Staphylococcus saprophyticus Staphylococcus epidermidis Staphylococcus aureus Staphylococcus hominis None . [In a patient with diarrhea, occasionally Entamoeba histolytica/E. dispar (four nucleated cysts, no chromatoidal bars) are identified as being present; however, these cells, which are misdiagnosed as protozoa, are really:] Macrophages Polymorphonuclear leukocytes Epithelial cells Eosinophils None . [A method calls for extracting an acidic drug from urine with an anion exchange column. The pKa of the drug is 6.5. Extraction is enhanced by adjusting the sample pH to:] 8.5 6.5 5.5 4.5 None . [Which of the following hematology values best frames the upper reference limits for synovial fluid?WBC Count / Percentage of PMNs / RBC Count] 200/ μL / 25% / 2,000/ μL 5,000/ μL / 50% / 10,000/ μL 10,000/μL / 50% / 50,000/ μL 20,000/ μL / 5% / 500,000/μL None Comment . [Plate 34 is from a Wright’s-stained peripheral blood film, 400×. The cells seen are diagnostic of which condition?] Intravascular hemolytic anemia Sickle cell disease Myelofibrosis Erythroleukemia None Comment . [Blood products are tested for which virus before being transfused to newborns?] EBV Human T-lymphotropic virus II (HTLV-II) Cytomegalovirus (CMV) Hepatitis D virus None . [For drugs with first-order elimination, which statement about drug clearance is true?] Clearance = elimination rate ÷ serum level It is most often performed by the liver It is directly related to half-life Clearance rate is independent of dose None . [Which of the following conditions is most often associated with a pleural fluid glucose below 30 mg/dL?] Diabetes mellitus Pancreatitis RA Bacterial pneumonia None . [A yellow pigment–producing organism that is oxidase positive, nonmotile, and does not grow on MacConkey agar is:] Acinetobacter baumannii Acinetobacter lwoffii Burkholderia cepacia Chryseobacterium meningosepticum None . Time's up
