What Approach Can Be Used to Decrease the Chance of a False-Positive

question 16

Multiple Choice

What approach can be used to decrease the chance of a false-positive result when performing latex agglutination to identify Cryptococcus infections?

• A) Mixing the specimen with India ink
• B) Pretreating the specimen with heat and pronase
• C) Freezing the specimen
• D) Waiting for the patient to be symptomatic before testing

---

Definitions:

Semipermeable Membrane

A membrane that allows the passage of certain small molecules or ions but blocks others.

Concentration Gradient

A variation in the concentration of a substance across a distance, often leading to the diffusion of substances from an area of higher concentration to an area of lower concentration.

Diffusion

Spontaneous spreading of molecules or atoms through a fluid or gas.

Indigestible Substances

Materials that cannot be broken down and absorbed by the digestive enzymes and system of an organism, often passing through the system largely unchanged.