Fun Quiz: Test Your Clinical Chemistry Knowledge

#1. Which of the following statements about 1,25 Dihydroxy Vitamin D is not true?

Decreases renal reabsorption of calcium and phosphate

Increase intestinal calcium and phosphate absorption

Increases calcium and phosphorus levels in the serum

Increases mineralization during bone formation

#2. Which statement is accurate about Beer’s law?

Concentration of a substance does not affect the absorbance or transmittance of light

Concentration of a substance is directly proportional to the amount of light absorbed

Concentration of a substance is inversely proportional to the amount of light absorbed

Concentration of a substance is directly proportional to the amount of light transmitted

Concentration of a substance is directly proportional to the logarithm of the transmitted light

#3. Chemical end product of the Hexokinase method of glucose determination

ADP

G6PD

ATP

NADP

NADPH

#4. What is the reason why testing for ionized calcium needs to be collected anaerobically?

To prevent exposure to atmospheric oxygen which oxidizes calcium

To prevent dissipation of labile calcium ions

To prevent loss of CO2 which increases the pH of the sample

Atmospheric nitrogen interferes with ion selective electrodes

To minimize sample evaporation

#5. Which is not a fraction of alkaline phosphatase?

Placental alkaline phosphatase

Intestinal alkaline phosphatase

Lung alkaline phosphatase

Bone alkaline phosphatase

Liver alkaline phosphatase

#6. Tumor marker in medullary thyroid carcinoma

CEA

Growth hormone

AFP

Thyroglobulin

Calcitonin

#7. Which parameters are used in the calculation of base excess or deficit?

pO2

pCO2

Both pH and pCO2

Both pH and pO2

pH

#8. Which element combines with phosphate in bone?

Iron

Potassium

Magnesium

Sodium

Calcium

#9. Turbid sample due to increased triglyceride levels

Xanthochromic

Icteric

Hemolyzed

Lipemic

#10. Watson-Schwartz test is a test for which compounds

Urobilin

Bilirubin

Benzaldehyde

Porphobilinogen

Urobilinogen

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