Clinical Chemistry Practice Questions With Complete Solutions

Which is not a major cardiac marker? a. Troponin b. CK-MB c. CK-MM d. Myoglobin e. All are major cardiac markers correct answer: C (CK-M is found in skeletal muscles) A pt diagnosed with heart failure will most likely have which of the following cardiac markers? a. BNP b. Homocysteine c. D-dimer-thrombus d. Fibrinogen correct answer: A It is recommended to check cardiac enzymes three times. Which of the following is NOT one of the recommended time frames. a. At presentation of illness b. 6-9 hours after presentation c. 12-24 hours after presentation d. 24-36 hours after presentation correct answer: D Which is NOT a source of creatine kinase a. Heart b. Liver c. Brain d. Skeletal muscle correct answer: B Which cardiac marker follows the given time frame? I. Rises: 4-8 hours II. Peaks: 12-24 hours III. Returns to normal: 72-96 hours a. Myoglobin b. CK-MP c. Troponin-I d. Troponin-T correct answer: B Which cardiac marker is the earliest to show up in myocardial injury?