MLT PHASE 2 CHEMISTRY MLT Phase 2 Chemistry Questions With Complete Solutions /Latest Guide Following overnight fasting, hypoglycemia in adults is defined as a glucose of: {Correct Ans: - <45 mg/dL (<2.5 mmol/L) The following results are from a 21 -year-old patient with a back injury who appears otherwise healthy. What is the best interpretation of these results? Whole blood glucose: 77 mg/dL (4.2 mmol/L) Serum glucose: 88 mg/dL (4.8 mmol/L) CSF glucose: 56 mg/dL (3.1 mmol/L) {Correct Ans: - All values are consistent with a normal healthy individual The preparation of a patient for st andard glucose tolerance testing should include: {Correct Ans: - A high carbohydrate diet for 3 days If a fasting glucose was 90 mg/dL, which of the following 2 -hour postprandial glucose results would most closely represent normal glucose metabolism? {Correct Ans: - 100 mg/dL (5.5 mmol/L) A healthy person with a blood glucose of 80 mg/dL (4.4 mmol/L) would have a simultaneously determined cerebrospinal fluid glucose value of: {Correct Ans: - 50 mg/dL (2.3 mmol/L) A 25-year-old man became nauseated and vomited 90 minutes after r eceiving a standard 75 g carbohydrate dose for an oral glucose tolerance test. The best course of action is to {Correct Ans: - Draw blood for glucose and discontinue test Cerebrospinal fluid for glucose assay should be: {Correct Ans: - Analyzed immediately Which of the following 2 hour postprandial glucose values demonstrates unequivocal hyperglycemia diagnostic for diabetes mellitus? {Correct Ans: - 200 mg/dL (11.0 mmol/L) MLT PHASE 2 CHEMISTRY Serum levels that define hypoglycemia in pre -term or low birth weight infants are: {Correct Ans: - Lower than adu lts A 45-year-old woman has a fasting serum glucose concentration of 95 mg/dL (5.2 mmol/L) and a 2 -hour postprandial glucose concentration of 105 mg/dl (5.8 mmol/L). The statement which best describes this patient's fasting serum glucose concentration is: {Correct Ans: - Normal; Reflecting glycogen breakdown by the liver Pregnant woman with symptoms of thirst, frequent urination, or unexplained weight loss should have which of the following tests performed? {Correct Ans: - Glucose tolerance test In the fasting state, th e arterial and capillary blood glucose concentration varies from the venous glucose concentration by approximately how many mg/dl (mmol/L)? {Correct Ans: - 5 mg/dL (o.27 mmol/L) higher The conversion of glucose or other hexoses into lactate or pyruvate is called: {Correct Ans: - Glycolysis Which one of the following values obtained during a glucose tolerance test are diagnostic of diabetes mellitus? {Correct Ans: - Fasting plasma glucose= 126 mg?dL (6.9 mmol/L) The glycated hemoglobin value represents the integrated valu es of glucose concentration during the preceding: {Correct Ans: - 6-8 weeks Monitoring long -term glucose control in patients with adult onset diabetes mellitus can best be accomplished by measuring: {Correct Ans: - Hemoglobin A1c A patient with type I, Insulin -dependent diabetes mellitus has the following results. After reviewing these test results, the technologist concluded that the patient is in a: Test PT Result Range Fasting blood glucose: 150 mg/dL 70 -110 mg/dL Hemoglobin A1c: 8.5% 4.0 -6.0% MLT PHASE 2 CHEMISTRY Fructosamine: 2.5 mmol/ L 2.0 -2.9 mmol/L {Correct Ans: - Improving state of metabolic control as indicated by fructosamine Total glycosylated hemoglobin levels in a hemolysate reflect the: {Correct Ans: - Average blood glucose levels of the past 2 -3 months Which of the following hemoglobins ha s glucose -6-phosphate on the amino -
terminal valine of the beta chain? {Correct Ans: - A1c A patient with hemolytic anemia will: {Correct Ans: - Show a decrease in glycated Hgb value In using ion -exchange chromatographic methods, falsely increased levels of Hgb A1c might be demonstrated in the presence of: {Correct Ans: - Hgb S An increase in serum acetone is indicative of a defect in the metabolism of: {Correct Ans: - Carbohydrates An infant with diarrhea is being evaluated for a carbohydrate intolerance. His stool yields a positive c opper reduction test and a pH of 5.0. It should be concluded that: {Correct Ans: - Further tests are indicated Blood samples were collected at the beginning of an exercise class and after thirty minutes of aerobic activity. Which of the following would be most co nsistent with the post -exercise sample? {Correct Ans: - Elevated lactic acid, elevated pyruvate What is the best method to diagnose lactase deficiency? {Correct Ans: - H2 Breath test The expected blood gas results for a patient in chronic renal failure would match the pattern of: {Correct Ans: - Metabolic acidosis Severe diarrhea causes {Correct Ans: - Metabolic acidosis The following blood gas results were obtained. The patient's results are compatible with which of the following?
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