Unit 3 DHH50203 JD2024

What is the primary purpose of photostability testing for finished pharmaceutical products?

• To determine the product’s shelf life in different storage conditions

• To assess how the product’s stability is affected by exposure to light

• To evaluate the product's microbiological safety

• To test the product’s resistance to temperature fluctuations

Which of the following is NOT a typical light source used for photostability testing?

• Artificial daylight fluorescent lamp

• Xenon lamp

• Metal halide lamp

• Infrared lamp

In photostability testing, what is the role of a dark control sample?

• To measure the impact of temperature on the product

• To evaluate the product’s stability without light exposure

• To check the effectiveness of the light source used

• To simulate the product’s shelf life in real-world conditions

What should be included in the photostability testing protocol for a finished product?

• Only the type of light source used

• The duration and intensity of light exposure, sample preparation, and analysis methods

• The historical stability data of similar products

• Only the expected results of the testing

Which of the following best describes “forced degradation” in photostability testing?

• Testing the product under normal light conditions to determine its stability

• Exposing the product to extreme light conditions to accelerate degradation

• Storing the product in the dark to measure any possible changes

• Testing the product at various temperatures without light exposure

When conducting photostability testing, why is it important to test multiple batches of the product?

• To ensure that the product is only tested in one type of packaging

• To account for variability in product quality and formulation

• To reduce the testing cost

• To simplify the data analysis process

What is the recommended frequency of testing for long-term photostability studies in the first year?

• Every 1 month

• Every 3 months

• Every 6 months

• Annually

What does the term "bracketing" refer to in the context of photostability testing?

• Testing only the most stable product variants

• Testing products at different stages of their shelf life

• Testing a range of container sizes or strengths by selecting representative samples

• Testing products under varying light intensities