MLT Chemistry Class 1120

160 Questions | Total Attempts: 696

SettingsSettingsSettings
MLT Chemistry Class 1120

Another certification quiz enjoy its straight from the book edition 5


Questions and Answers
  • 1. 
    Following overnight fasting, hypoglycemia in adults is defined as glucose of:  
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 2. 
    The following results are from a 21 yr old patient with a back injury who appears otherwise healthy: whole blood glucose:       77mg/dl (4.2 mmol/L) serum glucose:                88 mg/dl (4.8 mmol/L) CSF glucose:               56 mg/dl (3.1 mmol/L)
    • A. 

      The whole blood serum values are expected but the csf values is elevated

    • B. 

      The whole blood glucose value should be higher than the serum value

    • C. 

      All values are consistent with a normal healthy individual

    • D. 

      The serum and whole blood values should be identical

  • 3. 
    The preparation of a patient for standard for glucose tolerance testing should include:
    • A. 

      A high carbohydrate diet for 3 days

    • B. 

      A low carbohydrate diet for 3 days

    • C. 

      Fasting for 48 hours prior to testing

    • D. 

      Bed rest for 3 days

  • 4. 
    If a fasting glucose was 90 mg/dl, which of the following 2hr postprandial glucose results would most closely represent normal glucose metabalism
    • A. 

      55 mg/dl (3.0 mmol/L)

    • B. 

      100 mg/dl (5.5 mmol/L)

    • C. 

      180 mg/dl (9.9 mmol/L)

    • D. 

      260 mg/dl (14.3 mmol/L)

  • 5. 
    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:
    • A. 

      25 mg/dl (1.4 mmol/L)

    • B. 

      50 mg/dl (2.3 mmol/L)

    • C. 

      100 mg/dl (5.5 mmol/L)

    • D. 

      150 mg/dl (8.3 mmol/L)

  • 6. 
    A 25 yr old man became nauseated and vomited 90 minutes after receiving a standard 75g carbohydrate dose for an oral glucose tolerance test. the best course of action is to:
    • A. 

      Give the patient a glass of orange juice and continue test

    • B. 

      Start the test over immediately with a 50 g carbohydrate dose

    • C. 

      Draw blood for glucose and discontinue

    • D. 

      Place the patient in the dorsal recumbent position

  • 7. 
    Cerebrospinal fluid for glucose assay should be:
    • A. 

      Refrigerated

    • B. 

      Analyzed immediately

    • C. 

      Heated to 56 degrees celsius

    • D. 

      Stored at room temperature

  • 8. 
    Which of the following 2 hr postprandial glucose values demonstrates unequivocal hyperglycemia diagnostic for biabetes mellitus
    • A. 

      160 mg/dl (8.8 mmol/L)

    • B. 

      170 mg/dl (9.4 mmol/L)

    • C. 

      180 mg/dl (9.9 mmol/L)

    • D. 

      200 mg/dl (11. mmol/L)

  • 9. 
    Serum levels that define hypoglycemia in pre-term or low birth weight infants are:
    • A. 

      The same as adults

    • B. 

      Lower than adults

    • C. 

      The same as a normal full-term infant

    • D. 

      Higher than a normal full-term infant

  • 10. 
    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:
    • A. 

      Normal; reflecting glycogen breakdown by the liver

    • B. 

      Normal; reflecting glycogen breakdown by skeletal muscle

    • C. 

      Abnormal; indicating diabetes mellitus

    • D. 

      Abnormal; indicating hypoglycemia

  • 11. 
    Pregnant women with symptoms of thirst, frequent urination or unexplained weight loss should have which of the following tests performed?
    • A. 

      Tolbutamide test

    • B. 

      Lactose tolerance test

    • C. 

      Epinephrine glucose tolerance test

    • D. 

      Glucose tolerance test

  • 12. 
    In the fasting state, the arterial blood and the capillary blood glucose concentration varies from venous glucose concentration by approximately  how many mg/dl (mmol/L)
    • A. 

      1mg/dl (0.05 mmol/L) higher

    • B. 

      5 mg/dl (0.27 mmol/L)higher

    • C. 

      10 mg/dl (0.55 mmol/L) lower

    • D. 

      15 mg/dl (0.82 mmol/L)

  • 13. 
    The conversion of glucose or other hexoses into lactate or pyruvate is called:
    • A. 

      Glycogenesis

    • B. 

      Glycolysis

    • C. 

      Gluconeogenesis

    • D. 

      Glycogenolysis

  • 14. 
    Which of the following values obtained during a glucose tolerance test are diagnosticof diabetes mellitus?
    • A. 

      2hr specimen= 150 mg/dl (8.3 mmol/L)

    • B. 

      Fasting plasma glucose= 126 mg/dl (6.9 mmol/L)

    • C. 

      Fasating plasma glucose= 110 mg/dl (6.1 mmol/L)

    • D. 

      2hr specimen = 180 mg/dl (9.9 mmol/L)

  • 15. 
    The glycated hemoglobin value represents the integrated values of glucose concentration during the preceding:
    • A. 

      1-3 weeks

    • B. 

      4-5 weeks

    • C. 

      6-8 weeks

    • D. 

      16-20 weeks

  • 16. 
    Monitoring long-term glucose control in patients with adult onset diabetes mellitus can best be accomplished by measuring:
    • A. 

      Weekly fasting 7am serum glucose

    • B. 

      Glucose tolerance testing

    • C. 

      2hr postprandial serum glucose

    • D. 

      Hemoglobin A1c

  • 17. 
    A patient with type 1 insulin-dependent diabetes mellitus has the following results: test                                                                          patient                                                            referance range fasting blood glucose                  150 mg/dl (8.3 mmol/L)                                      70-110 mg/dl (3.9-6.1 mmol/L) hemoglobin A1c                                    8.5%                                                                                4.0%-6.0% fructosamine                                     2.5 mmol/L                                                                  2.0- 2.9 mmol/L
    • A. 

      "steady state" of metabolic control

    • B. 

      State of flux, progressively worsening metabolic control

    • C. 

      Improving state of metabolic control as indicated by fructosamine

    • D. 

      State of flux as indicted by the fasting glucose lvl

  • 18. 
    The glycosylated hemoglobin levels in a hemolysate reflect the:
    • A. 

      Average blood glucose levels of the past 2-3 months

    • B. 

      Average blood glucose levels for the past week

    • C. 

      Blood glucose level at the time the sample drawn

    • D. 

      Hemoglobin a1c level at the time the sample is drawn

  • 19. 
    Which of the following hemoglobins has a glucose-6-phosphate on the amino-terminal valine of the beta chain:
    • A. 

      S

    • B. 

      C

    • C. 

      A2

    • D. 

      A1c

  • 20. 
    A person with hemolytic anemia will:
    • A. 

      Show a decrease in glycated hgb value

    • B. 

      Show an increase in glycated hgb value

    • C. 

      Show lil or no change in glycated hgb value

    • D. 

      Demonstrate an elevated hgb A1

  • 21. 
    In using ion-exchange chromotographic methods, falsely increased levels of hgb A1c might be demonstrated in the presence of:
    • A. 

      Iron defiency anemia

    • B. 

      Pernicious anemia

    • C. 

      Thalassemias

    • D. 

      Hgb S

  • 22. 
    An increase in serum acetone is indicative of a defect in the metabolism of:
    • A. 

      Carbohydrates

    • B. 

      Fat

    • C. 

      Urea nitrogen

    • D. 

      Uric acid

  • 23. 
    An infant with diarrhea is being evaluated for a carbohydrate intolerance. his stool yields a positive copper reduction test and a ph of 5.0. it should be concluded that
    • A. 

      Further test are indicated

    • B. 

      Results are inconsistent-repeat both tests

    • C. 

      The diarrhea is not due to carbohydrate intolerance

    • D. 

      The tests provided nno useful information

  • 24. 
    Blood samples were collected at the beginning of an excercise class and afer thirty minutes of aerobic activity. which of the following would be most consistent with the post exercise sample?
    • A. 

      Normal lactic acid, low pyruvate

    • B. 

      Low lactic acid, elevated pyruvate

    • C. 

      Elevated lactic acid, low pyruvate

    • D. 

      Elevated lactic acid, elevated pyruvate

  • 25. 
    What is the best method to diagnose lactase deficiency?
    • A. 

      H2 breath test

    • B. 

      Plasma adolase lvl

    • C. 

      LDH level

    • D. 

      D-xylose test

Related Topics
Back to Top Back to top