Clinical Chemistry questions for the MOHAP lab exam.
Clinical Chemistry in the MOHAP lab exam covers carbohydrates, proteins, lipids, enzymes, electrolytes, acid-base balance, hormones and the analytical techniques used to measure them. Candidates should be able to interpret results in their clinical context and understand the principles and limitations of common chemistry methods.
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743
clinical chemistry practice questions
- 18%
- of the exam
- 8
- subtopics
- Oct 2026
- updated
Inside this topic.
The subtopics our clinical chemistry questions cover.
- Endocrinology
- Electrolytes
- Enzymes
- Renal Function
- Proteins
- Carbohydrates
- Liver Function
- Tumor Markers
Key facts to remember.
High-yield clinical chemistry points to revise before the exam.
- 1
Normal arterial pH is 7.35-7.45; in primary metabolic acidosis bicarbonate falls and the lungs compensate by lowering pCO2.
- 2
Cardiac troponin I or T is the preferred biomarker for myocardial infarction, rising within a few hours of injury and remaining raised for several days.
- 3
Conjugated (direct) bilirubin rises in obstructive jaundice, while unconjugated bilirubin predominates in hemolysis and Gilbert syndrome.
- 4
Glucose oxidase methods convert glucose to gluconic acid and hydrogen peroxide, which is then measured in a coupled peroxidase color reaction.
- 5
In primary hypothyroidism TSH is raised and free T4 is low, whereas in primary hyperthyroidism TSH is suppressed.
Sample questions with answers.
10 practice questions for the MOHAP Medical Laboratory Technologist & Technician Licensing Exam - UAE (CBT) (Clinical Chemistry). Pick an answer to see if you're right, with a full explanation.
Question 1
Coenzyme A in the citric acid cycle combines with which molecule to form citrate?
Question 2
Which "Lipid" is considered the "Good Cholesterol" because it carries cholesterol away from the arteries?
Question 3
In hemolytic jaundice, which bilirubin fraction increases?
Question 4
Which enzyme is most useful for monitoring chronic alcohol abuse?
Question 5
Which vitamin deficiency causes bleeding due to impaired gamma-carboxylation?
Question 6
The major storage form of iron in the body is:
Question 7
Which factor causes positive interference in both BCG and BCP albumin methods?
Question 8
Which anticoagulant is most appropriate for blood gas analysis?
Question 9
The BEST marker for long-term glycemic control is:
Question 10
Which laboratory abnormality is expected in obstructive jaundice?
Other topics in this exam.
Questions, answered
Look at the pH first to decide between acidosis and alkalosis, then check pCO2 and bicarbonate to see which is the primary change. Next, decide whether compensation is present and, for a metabolic acidosis, calculate the anion gap. Following the same order every time reduces mistakes.
CK-MB and troponin both rise after myocardial injury, but troponin is more specific and stays raised for longer, whereas CK-MB returns to normal sooner. For the liver, ALT is more liver-specific than AST, and a raised GGT helps confirm that a raised ALP comes from the liver rather than bone. Learning the timing and specificity of each marker is the key to these questions.
Ready to practise clinical chemistry?
All 743 clinical chemistry questions, with explanations and a readiness score for this topic.