AAB MT Chemistry Exam Study Guide
Questions And Answers Verified 100% Correct
An LD isoenzyme electrophoretic pattern that shows an increase in LD1, LD2,
and LD3 is seen in which disease state? - ANSWER -Pernicious anemia
Creatine kinase is clinically significant in diseases of which organ? - ANSWER -
Muscle
Creatine kinase is frequently elevated in acute myocardial infarction and which
other disorder? - ANSWER -Duchenne's muscular dystrophy
Which serum enzyme begins to rise 2 to 4 hours, has peak activity ocurring 12 to
36 hours, and returns to normal 2 to 4 days after an acute myocardial infarction? -
ANSWER -Creatine kinase
Aspartate transaminase is elevated in all of the following conditions EXCEPT? -
ANSWER -Acute pancreatitis
AST is elevated in all of the following: - ANSWER -Myocardial infarction,
muscular dystrophy, and liver disease
Which enzyme is liver specific? - ANSWER -Alanine transaminase
Which enzyme is the most sensitive indicator of obstructive jaundice? - ANSWER
-Alkaline phosphatase
A high alkaline phosphatase level in the presence of other negative liver function
tests is indicative of which disorder? - ANSWER -Bone disorder
What is the optimum pH for acid phosphatase? - ANSWER -5.0
,What is the clinical significance of an elevated acid phosphatase? - ANSWER -
Prostatic disease
Which enzyme may be monitored in recovering alcoholics? - ANSWER -Gamma-
glutamyl transferase
Which enzyme is characteristically elevated in mumps? - ANSWER -Amylase
Lipase catalyzes the hydrolysis of which substrate? - ANSWER -Triglycerides
What is the substrate for the Cherry-Crandall lipase method? - ANSWER -Olive
oil
In which disease state are the highest levels of aldolase seen? - ANSWER -
Muscular dystrophy
Because ionized calcium can be changed without affecting the total calcium level,
what other parameter(s) must be known to properly elevate calcium? - ANSWER -
pH and protein
All of the following regulate calcium levels: - ANSWER -Vitamin D, calcitonin,
and parathyroid hormone
All of the following regulate calcium levels, EXCEPT: - ANSWER -Aldosterone
Which one of the following specimens is acceptable for the determination of total
calcium? - ANSWER -Heparinized calcium
In the complexometric titration (EDTA) method for calcium, the pH must be
adjusted to prevent what occurrence? - ANSWER -Interference by magnesium
The classic Clark-Collip method for calcium is based on which assumption? -
ANSWER -Calcium will be precipitated as an oxalate
, What is the purpose of lanthanum in the atomic absorption determination of
calcium? - ANSWER -It will bind phosphate
At a pH of 7.4, most of the phosphorous in the body is in which form? - ANSWER
-Bone
Inorganic phosphate can be determined from a colorimetric method involving
which reagent? - ANSWER -Molybdate
A labor and deliver patient with preeclampsia is being treated for premature
contractions. Which one of the following is the most likely laboratory finding? -
ANSWER -Hypermagnesemia
The colorimetric method for magnesium employs which reagent? - ANSWER -
Titan yellow
What is the most abundant iron-containing compound in the body? - ANSWER -
Ferritin
Why should serum iron be drawn at the same time on consecutive days? -
ANSWER -To avoid diurnal variation
Which protein transports the majority of protein in the bloodstream? - ANSWER -
Ceruplasmin
Increased serum copper is seen in which disease? - ANSWER -Wilson's disease
Which analyte is an early indicator of tissue hypoxia? - ANSWER -Lactic acid
What is the major extracellular cation? - ANSWER -Sodium
Which hormone acts on the distal convoluted tubule to increase sodium
reabsorption? - ANSWER -Aldosterone
The following metabolic panel results are available on an ICU patient:
Questions And Answers Verified 100% Correct
An LD isoenzyme electrophoretic pattern that shows an increase in LD1, LD2,
and LD3 is seen in which disease state? - ANSWER -Pernicious anemia
Creatine kinase is clinically significant in diseases of which organ? - ANSWER -
Muscle
Creatine kinase is frequently elevated in acute myocardial infarction and which
other disorder? - ANSWER -Duchenne's muscular dystrophy
Which serum enzyme begins to rise 2 to 4 hours, has peak activity ocurring 12 to
36 hours, and returns to normal 2 to 4 days after an acute myocardial infarction? -
ANSWER -Creatine kinase
Aspartate transaminase is elevated in all of the following conditions EXCEPT? -
ANSWER -Acute pancreatitis
AST is elevated in all of the following: - ANSWER -Myocardial infarction,
muscular dystrophy, and liver disease
Which enzyme is liver specific? - ANSWER -Alanine transaminase
Which enzyme is the most sensitive indicator of obstructive jaundice? - ANSWER
-Alkaline phosphatase
A high alkaline phosphatase level in the presence of other negative liver function
tests is indicative of which disorder? - ANSWER -Bone disorder
What is the optimum pH for acid phosphatase? - ANSWER -5.0
,What is the clinical significance of an elevated acid phosphatase? - ANSWER -
Prostatic disease
Which enzyme may be monitored in recovering alcoholics? - ANSWER -Gamma-
glutamyl transferase
Which enzyme is characteristically elevated in mumps? - ANSWER -Amylase
Lipase catalyzes the hydrolysis of which substrate? - ANSWER -Triglycerides
What is the substrate for the Cherry-Crandall lipase method? - ANSWER -Olive
oil
In which disease state are the highest levels of aldolase seen? - ANSWER -
Muscular dystrophy
Because ionized calcium can be changed without affecting the total calcium level,
what other parameter(s) must be known to properly elevate calcium? - ANSWER -
pH and protein
All of the following regulate calcium levels: - ANSWER -Vitamin D, calcitonin,
and parathyroid hormone
All of the following regulate calcium levels, EXCEPT: - ANSWER -Aldosterone
Which one of the following specimens is acceptable for the determination of total
calcium? - ANSWER -Heparinized calcium
In the complexometric titration (EDTA) method for calcium, the pH must be
adjusted to prevent what occurrence? - ANSWER -Interference by magnesium
The classic Clark-Collip method for calcium is based on which assumption? -
ANSWER -Calcium will be precipitated as an oxalate
, What is the purpose of lanthanum in the atomic absorption determination of
calcium? - ANSWER -It will bind phosphate
At a pH of 7.4, most of the phosphorous in the body is in which form? - ANSWER
-Bone
Inorganic phosphate can be determined from a colorimetric method involving
which reagent? - ANSWER -Molybdate
A labor and deliver patient with preeclampsia is being treated for premature
contractions. Which one of the following is the most likely laboratory finding? -
ANSWER -Hypermagnesemia
The colorimetric method for magnesium employs which reagent? - ANSWER -
Titan yellow
What is the most abundant iron-containing compound in the body? - ANSWER -
Ferritin
Why should serum iron be drawn at the same time on consecutive days? -
ANSWER -To avoid diurnal variation
Which protein transports the majority of protein in the bloodstream? - ANSWER -
Ceruplasmin
Increased serum copper is seen in which disease? - ANSWER -Wilson's disease
Which analyte is an early indicator of tissue hypoxia? - ANSWER -Lactic acid
What is the major extracellular cation? - ANSWER -Sodium
Which hormone acts on the distal convoluted tubule to increase sodium
reabsorption? - ANSWER -Aldosterone
The following metabolic panel results are available on an ICU patient:
