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CHEMMLA54 Basic Techniques in Clinical Chemistry — Assignment 1

Number of questions: 12

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1) There may be more than one correct answer. Most chemical determinations of blood samples are done analyzing the:
  1. serum
  2. whole blood
  3. plasma
  4. capillary blood
 2) There may be more than one correct answer. Fecal blood:
  1. may cause the specimen to be tarry-black in appearance
  2. may aid in determining cause of hypochromic anemias
  3. will be present if bleeding occurs anywere in the GI tract
  4. aids in monitoring treatment of colorectal cancer
 3) There may be more than one correct answer. Reasons for storing specimens include:
  1. inability to do the test immediately
  2. for a repeat analysis if necessary
  3. a timed sequence for specimens may be indicated
  4. may need to be sent to specialty lab
 4) There may be more than one correct answer. Hemolyzed serum or plasma
  1. may interfere with the photometric analysis of a specimen
  2. significantly lowers the value for constituents such as LDH and AST in the serum
  3. appears as a red color
  4. can be used for all chemistry determinations but not hematology determination
 5) There may be more than one correct answer. Freezing as a means of preserving:
  1. can be used on serum
  2. can be used on whole blood specimens
  3. can be used on plasma
  4. cannot be used to preserve any type of blood specimen
 6) There may be more than one correct answer. Inaccurate results in non-automated methods for blood chemistry could be due to:
  1. pipetting errors
  2. inadequate mixing
  3. incorrect incubation time
  4. expired reagents
 7) Choose the one best answer. When taking venous blood for glucose levels the appropriate Vacutainer is
  1. blue stopper
  2. Gray stopper
  3. Lavender stopper
  4. All of the above
 8) Choose the one best answer. Abnormally low glucose concentration is termed
  1. Diabetic coma
  2. Insulin shock
  3. Glycosuria
  4. Polydipsia
 9) Choose the one best answer. The most common specimen for glucose determination is
  1. fasting whole blood specimen
  2. 2 hour post prandrial serum or plasma
  3. random plasma or serum
  4. fasting serum or plasma
 10) Which substance is broken down during glycolysis?
  1. Glucose
  2. Glycogen
  3. Glucagon
  4. Glycerol
 11) There may be more than one correct answer. Complete removal of protein is indicated by:
  1. turbidity
  2. foaming
  3. cloudiness
  4. transparency
 12) There may be more than one correct answer. Proteins
  1. tend to have many electrically charged areas
  2. may interfere with reactions when chemical tests are being done
  3. may be enzymes that may cause blood samples to deteriorate
  4. may be removed from specimens to produce a protein-free filtrate

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