Consolidated Political Compass Test (CPCT) Practice Exam 2025 - Free CPCT Practice Questions and Assessment Guide

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Which specimen should be protected from light when collected by a PCT?

Hemoglobin

Bilirubin

Bilirubin should be protected from light during and after collection because it is highly sensitive to light, which can cause it to break down or degrade. This degradation results in incorrect test results, affecting the diagnosis and evaluation of liver function, hemolytic diseases, and other conditions related to bilirubin levels in the bloodstream.

The other options do not have the same sensitivity to light. Hemoglobin, while an important component of blood, does not require light protection, nor do glucose and cholesterol. These substances are stable under normal lighting conditions and do not lose their integrity during testing as bilirubin does when exposed to light. Therefore, the need to protect bilirubin from light is a critical factor in ensuring accurate clinical assessments.

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Glucose

Cholesterol

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