On the reagent strip, which test pad has the longest manual wait time, and color that develops after the timer ends should be...

On the reagent strip, which test pad has the longest manual wait time, and color that develops after the timer ends should be...

• A. Used to determine the final result
• B. Compared to a different color chart
• C. Repeated with a new reagent strip
• D. Ignored

Answer: (D)

Reagent-strip results must be read within the specific time window listed for each pad. The color that develops after that window ends is not considered valid, because ongoing reactions can alter the color and lead to unreliable results. Therefore, any color that appears after the timer has expired should be ignored. This keeps interpretation consistent with the manufacturer’s validated reading times.

Reagent-strip results must be read within the specific time window listed for each pad. The color that develops after that window ends is not considered valid, because ongoing reactions can alter the color and lead to unreliable results. Therefore, any color that appears after the timer has expired should be ignored. This keeps interpretation consistent with the manufacturer’s validated reading times.