Difficulty: Hard

Average Score: 33%

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

Rationale

Urine specimen container is missing a preservative.

Preservatives in urine specimens are crucial for maintaining the integrity of the sample by preventing bacterial growth and chemical changes that could alter test results. Without a preservative, the specimen may not accurately reflect the patient's condition, leading to potentially misleading conclusions during analysis.

A (Urine specimen volume is 6 mL.) YOUR ANSWER

A urine specimen volume of 6 mL is typically sufficient for routine urinalysis, as most tests require only a small amount of urine. As long as the volume meets the minimum requirement set by the laboratory, this would not be a cause for rejection.

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

A temperature of 23° C is within a normal range for urine specimens and does not constitute a reason for rejection. Specimens are usually analyzed at room temperature, and this temperature does not indicate any degradation or alteration of the sample.

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

While an amber and turbid appearance may indicate possible issues such as dehydration or the presence of cells or crystals, it does not automatically warrant rejection of the specimen. Such characteristics can be evaluated during analysis, and further tests can be conducted as needed.

Conclusion

For routine urinalysis, the absence of a preservative in the specimen container is a critical factor that leads to specimen rejection. This is because it can significantly compromise the reliability of test results, while factors such as urine volume, temperature, and physical appearance can still provide useful information and do not necessarily prevent analysis. Ensuring that samples are properly preserved is essential for accurate diagnostic outcomes.

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