Question

which of the following clinical laboratory tests can identify an infection?
a blood urea nitrogen
b culture and sensitivity
c creatinine clearance
d clean catch specimen

Explanation:

• Blood urea nitrogen (A): Measures kidney function, not infection.
• Culture and sensitivity (B): Grows microorganisms (if present) from a sample (like urine, blood) and tests antibiotic effectiveness against them, which helps identify the causative agent of an infection.
• Creatinine clearance (C): Assesses kidney function, not infection.
• Clean catch specimen (D): Is a method of collecting a urine sample (to reduce contamination), not a test to identify infection itself.

Answer:

B. culture and sensitivity