CLT Clinical Chemistry & Biochemical Analysis

Question 1

Which enzyme is most commonly measured to assess liver cell damage (hepatocellular injury)?

Accepted Answer

Alanine aminotransferase (ALT)

Answer

Alkaline phosphatase (ALP)

Answer

Gamma-glutamyl transferase (GGT)

Answer

Amylase

Question 2

A patient's serum glucose result is 52 mg/dL. Which condition does this value indicate?

Accepted Answer

Hypoglycemia

Answer

Hyperglycemia

Answer

Diabetes mellitus

Answer

Euglycemia

Question 3

Which specimen tube is most appropriate for serum chemistry panels?

Accepted Answer

Red or gold top (SST)

Answer

Lavender top (EDTA)

Answer

Green top (heparin)

Answer

Blue top (citrate)

Question 4

The Jaffe reaction is used in the clinical laboratory to measure which analyte?

Accepted Answer

Creatinine

Answer

Urea nitrogen

Answer

Uric acid

Answer

Total protein

Question 5

Which lipoprotein is considered cardioprotective and is often called 'good cholesterol'?

Accepted Answer

High-density lipoprotein (HDL)

Answer

Very low-density lipoprotein (VLDL)

Answer

Low-density lipoprotein (LDL)

Answer

Chylomicrons

Question 6

A serum sodium value of 128 mEq/L would be reported as which electrolyte abnormality?

Accepted Answer

Hyponatremia

Answer

Hypernatremia

Answer

Hyperkalemia

Answer

Hypokalemia

Question 7

In a glucose tolerance test (GTT), which two-hour post-load plasma glucose value is diagnostic of diabetes mellitus according to ADA criteria?

Accepted Answer

≥200 mg/dL

Answer

≥126 mg/dL

Answer

≥140 mg/dL

Answer

≥180 mg/dL