MLT License Exam 2023 With Questions And Answers 100% Correct.

MLT License Exam 2023 With Questions And Answers 100% Correct. The name of the rapid test seen in the image, often used to differentiate S. pneumoniae from viridans streptococci, in which a drop of 10% deoxycholate was placed on an area of growth, is: A) Bile solubility test B) Bile esculin hydrolysis C) Optochin susceptibility test D) Bacitracin susceptibility test - ANSWER A) Bile solubility test Which of the following describes the Westgard multi-rule R4S? A) Four consecutive control data points are within ±1s B) Four consecutive control data points are outside ± 2s C) One data point is +2SD and a consecutive data point is -2SD D) Two consecutive data points fall outside the mean four times - ANSWER C) One data point is +2SD and a consecutive data point is -2SD Feedback Westgard R4S rule: this rule applies when the difference between the highest and lowest result of a run exceeds 4 standard deviations (SD). For example, on day one the control is at +2SD. On day two, the same control is at -2SD. This rule detects random errors. The run is rejected. Which tests will be abnormal in a patient with Fibrin Stabilizing factor deficiency? A) aPTT B) 5 M urea clot solubility test C) Factor XIII assay D) Both 5 M urea clot solubility test and Factor XIII assay - ANSWER D) Both 5 M urea clot solubility test and Factor XIII assay The following BEST describes serum hCG levels during pregnancy: A) Rise in levels throughout pregnancy B) Highest levels found at end of pregnancy C) Rapid rise in levels during first trimester; slow decline and possible level-off throughout remainder of pregnancy D) Slow rise in levels during first trimester; rapid rise during second trimester; slow decline during the third trimester - ANSWER C) Rapid rise in levels during first trimester; slow decline and possible level-off throughout remainder of pregnancy Feedback hCG levels rise rapidly during the first trimester, then the levels start to decline around week 16. The hCG levels slowly decrease and can level off during the remainder of the pregnancy. Which of the following is an example of a macroscopic urinalysis abnormality? A) Glitter cells B) Positive protein C) Waxy casts D) Red blood cell casts - ANSWER B) Positive protein Feedback The macroscopic abnormalities are detected by the physical and chemical portions of the urinalysis. Obtaining a positive protein during the chemical portion of a urinalysis would be an example of a macroscopic abnormality. The presence of glitter cells, waxy casts, and red blood cell casts could only be determined by the microscopic examination of the urine sample. Which bacterial species is most likely represented by the spreading, wrinkled, non-hemolytic colony appearance as illustrated in the photograph? A) Burkholderia pseudomallei B) Pseudomonas aerginosa C) Bacillus cereus D) Listeria monocytogenes - ANSWER A) Burkholderia pseudomallei Which hemoglobin will be increased in delta-beta thalassemia? A) Hb A B) Hb A2 C) Hb F D) Hb H - ANSWER C) Hb F Feedback HbF is increased in delta-beta thalassemia. It is increased to 100% in delta-beta thalassemia major. In beta thalassemia HbA, a2ß2, is decreased or absent. In delta beta thalassemia HbA2, a2d2, is decreased. HbH is beta globin tetramer seen in alpha thalassemia HbH disease. HbH is not seen in beta thalassemia. Which of the following methods for long-term diabetic monitoring is recommended for patients with sickle cell anemia? A) Fructosamine B) Hemoglobin A1c (HbA1c) C) Both methods are acceptable. D) Neither method is acceptable. - ANSWER A) Fructosamine Feedback In sickle cell anemia, rapid hemoglobin turnover may be present. HbA1c and other glycosylated hemoglobin assays are not valid in rapid hemoglobin turnover and hemoglobinopathy conditions. Fructosamine measurements are more sensitive than HbA1c in monitoring long term diabetes in patients with such conditions. Fructosamine (also called glycosylated albumin) is formed by the nonenzymatic attachment of glucose to amino groups of proteins other than hemoglobin. Because albumin is the most abundant serum protein whose halflife is about 20 days, the concentration of glycosylated albumin reflects the consumption of glucose over a period of 2-3 weeks. This feature makes fructosamine the test of choice for monitoring diabetic control in patients with hemolytic anemias such as sickle cell anemia, thalassemia, and autoimmune hemolysis Abnormal granulation can be seen in the cytoplasm of leukocytes in which of the following conditions? A) Pelger-Huët anomaly B) Pseudo-Pelger-Huët anomaly C) May-Hegglin anomaly D) Chediak-Higashi syndrome - ANSWER C) May-Hegglin anomaly Small, gray, alpha hemolytic colonies with indented centers were isolated on sheep blood agar from a peritoneal fluid. The following biochemicals were performed: Gram Stain: Gram positive lancet-shaped cocci in chains and pairs Catalase: Negative Optochin susceptibility: Sensitive >14 mm A) Alpha hemolytic streptococcus species B) Streptococcus pneumoniae C) Streptococcus pyogenes D) Streptococcus agalactiae - ANSWER C) Streptococcus pyogenes A representative congenital neutrophil functional disorder is: A) Chédiak-Higashi syndrome B) Gaucher's disease C) Niemann-Pick Disease D) Systemic inflammatory response syndrome (SIRS) - ANSWER A) Chédiak-Higashi syndrome.