Deck 8: Clinical: Biochemical Assessment

Question 1

Which of the following is an example of a static assay?

A)Serum hematocrit
B)Serum ferritin
C)Serum zinc
D)Zinc protoporphyrin:heme ratio

Answer 1

C
A static assay is one that directly measures the level of a nutrient; therefore, serum zinc is a static assay.Serum hematocrit, serum ferritin, and zinc protoporphyrin:heme ratio are examples of functional assays.

Question 2

Which of the following is NOT an example of a functional assay?

A)Serum iron
B)Serum albumin
C)Serum transferrin
D)TIBC

Answer 2

A
Functional assays are ones that measure a biochemical or physiologic activity that depends on the nutrient of interest.Serum albumin, serum transferrin, and total iron-binding capacity are examples of functional assays.Serum iron is a static assay.

Question 3

Which laboratory value would be added in a comprehensive metabolic panel (compared with a BMP)?

A)Albumin
B)Glucose
C)Blood urea nitrogen
D)White blood cells

Answer 3

A
The Centers for Medicare and Medicaid Services established that for the BMP, the following tests are reimbursable: glucose, calcium, potassium, carbon dioxide, chloride, blood urea nitrogen, and creatinine.For the CMP, the following are added: albumin, total protein, alkaline phosphate, alanine aminotransferase, aspartate aminotransferase, and bilirubin.WBC would appear on a CBC, which may include a differential identifying the levels of the different types.

Question 4

Which of the following is a measure of somatic protein status?

A)C-reactive protein
B)Retinol-binding protein
C)Urinary methylmalonic acid
D)Urinary creatinine

Question 5

Which nutrient related disorder is likely to result in a stool test being ordered?

A)Diabetes
B)Anemia
C)Night blindness
D)Cheilosis

Question 6

Which of the following is a measure of glucose control?

A)Highly sensitive C-reactive protein
B)Hemoglobin A1C
C)Homocysteine
D)Apolipoprotein B

Question 7

Which of the following is a measure of iron storage?

A)TIBC
B)Serum ferritin
C)Transferrin
D)Hemoglobin

Question 8

In urinalysis tests, which of the following is expected to appear at some level in normal people?

A)Glucose
B)Ketones
C)Blood
D)Protein

Question 9

Which indicator of protein status has the longest half-life?

A)Albumin
B)Prealbumin
C)Retinol-binding protein
D)Transferrin

Question 10

Hair analysis is particularly useful for

A)assessing levels of trace elements.
B)measuring sodium and potassium levels.
C)measuring fat soluble vitamin status.
D)measuring phosphorus levels.

Question 11

Which of the following is TRUE regarding calculation of nitrogen balance?

A)The formula compares grams of dietary protein eaten against grams of protein excreted.
B)The calculation requires a 24-hour urine collection for the amount of urea excreted in 24 hours.
C)The formula uses a patient's current body weight.
D)Nitrogen balance is not affected by whether or not the patient is growing.

Question 12

During trauma, what happens to negative acute-phase respondent levels?

A)Blood levels decrease because of decreased synthesis.
B)Blood levels increase because of transport into the vascular space.
C)Blood levels are not altered because of the catabolism of proteins.
D)Blood levels are similar to what they would be during simple starvation.

Question 13

Apolipoprotein B (apoB) is contained in

A)LDL cholesterol
B)HDL cholesterol
C)VLDL cholesterol
D)Triglycerides

Question 14

Which of the following is NOT a laboratory measure of hydration status?

A)Serum sodium
B)Blood urea nitrogen
C)Serum glucose
D)Urine specific gravity

Question 15

Which of the following is NOT associated with a decrease in prealbumin levels?

A)Malnutrition
B)Inflammation
C)Protein-wasting disease of the gastrointestinal tract
D)Zinc deficiency

Question 16

Which of the following occurs during acute illness or trauma?

A)Negative acute-phase respondents increase.
B)Positive acute-phase respondents decrease.
C)Negative acute-phase respondents decrease.
D)Both positive and negative acute-phase respondents increase.

Question 17

Which of the following manifestations will occur in iron deficiency anemia?

A)Microcytic anemia
B)Macrocytic anemia
C)High reticulocyte count
D)High MCV

Question 18

Which of the following would be included in a complete blood count?

A)Total cholesterol
B)Mean cell volume
C)Glucose
D)Albumin

Question 19

Which of the following is a positive acute-phase respondent?

A)Interleukin-1
B)Albumin
C)Transthyretin
D)C-reactive protein

Question 20

Which of the following deficiencies could cause macrocytic anemia?

A)Vitamin B12
B)Vitamin B6
C)Homocysteine
D)Iron