Which of the following is not a valid reason to reject a specimen for analysis?

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Multiple Choice

Which of the following is not a valid reason to reject a specimen for analysis?

The main idea here is that whether a specimen is rejected depends on how that condition interferes with the specific test being performed. For a bilirubin test, icterus (the yellow color from high bilirubin) is not a reason to reject. In fact, the very condition you’re trying to measure is present in the specimen, and there are methods that can quantify bilirubin despite the icteric appearance. So an icteric bilirubin specimen does not invalidate the test — it simply reflects the result you’re trying to obtain. In contrast, the other scenarios describe issues that do compromise certain analyses: clots in a CBC prevent accurate cell counting because clots trap cells and distort morphology; a lipemic sample can interfere with colorimetric measurements used in many tests (including glucose assays); and a hemolyzed electrolyte specimen releases intracellular contents that skew electrolyte levels, making the result unreliable. These are valid reasons to reject for the respective tests. So the not-a-valid-reject reason here is an icteric bilirubin specimen, because it aligns with what you’re measuring and doesn’t inherently invalidate the bilirubin analysis.

The main idea here is that whether a specimen is rejected depends on how that condition interferes with the specific test being performed. For a bilirubin test, icterus (the yellow color from high bilirubin) is not a reason to reject. In fact, the very condition you’re trying to measure is present in the specimen, and there are methods that can quantify bilirubin despite the icteric appearance. So an icteric bilirubin specimen does not invalidate the test — it simply reflects the result you’re trying to obtain.

In contrast, the other scenarios describe issues that do compromise certain analyses: clots in a CBC prevent accurate cell counting because clots trap cells and distort morphology; a lipemic sample can interfere with colorimetric measurements used in many tests (including glucose assays); and a hemolyzed electrolyte specimen releases intracellular contents that skew electrolyte levels, making the result unreliable. These are valid reasons to reject for the respective tests.

So the not-a-valid-reject reason here is an icteric bilirubin specimen, because it aligns with what you’re measuring and doesn’t inherently invalidate the bilirubin analysis.

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