Difficulty: Easy

Average Score: 100%

Which of the following conditions is a cause for specimen rejection for a routine urinalysis?

Rationale

Urine specimen volume is 6 mL.

For a routine urinalysis, the minimum accepted specimen volume is typically around 10 mL. A volume of only 6 mL is insufficient for the necessary tests, leading to the rejection of the specimen.

A (Urine specimen volume is 6 mL.) CORRECT

The volume of 6 mL is below the required threshold for a standard urinalysis, which necessitates a minimum of 10 mL to perform all tests accurately. This insufficient volume may prevent comprehensive analysis, which is essential for reliable results.

B (Urine specimen temperature is 23° C (73.4° F).) YOUR ANSWER

A temperature of 23° C is within an acceptable range for urine specimens. While extreme temperatures can affect the stability of certain analytes, this specific temperature does not warrant rejection and is typically manageable for testing purposes.

C (Urine specimen container is missing a preservative.) YOUR ANSWER

The absence of a preservative can potentially affect the integrity of the sample; however, many routine urinalysis tests can still be performed on unpreserved specimens. Depending on the specific tests required, this may not automatically lead to rejection.

D (Urine specimen is amber and turbid.) YOUR ANSWER

Amber color and turbidity can indicate specific conditions or substances present in the urine but do not in themselves cause rejection of the specimen. Instead, these characteristics may provide valuable diagnostic information, prompting further investigation rather than outright rejection.

Conclusion

In routine urinalysis, the volume of the specimen is critical, and a sample size of 6 mL is insufficient for comprehensive testing, resulting in its rejection. Other factors like temperature, preservatives, and physical characteristics like color or turbidity may influence testing but do not necessarily lead to rejection. The emphasis on adequate specimen volume ensures that all necessary analyses can be conducted reliably.

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