- Test should be kept away from light:
- A- Serum bilirubin.
Serum bilirubin is indeed a test that should be kept away from light.
Here's why:
Light sensitivity of bilirubin:
- Bilirubin is a light-sensitive compound, meaning it can break down when exposed to light. This breakdown can lead to inaccurate results in the test.
- Both direct and indirect bilirubin are affected by light, although direct bilirubin is slightly more sensitive.
Protecting bilirubin samples from light:
To ensure accurate results, serum bilirubin samples should be protected from light at all stages:
- During collection: Blood tubes for bilirubin tests are typically covered in light-protective material.
- During transport: Samples should be transported in light-protected containers.
- During storage: Samples should be stored in a dark environment, such as a refrigerator, until analysis.
- During analysis: The testing equipment should be designed to minimize light exposure.
Consequences of light exposure:
- If a bilirubin sample is exposed to light, the measured bilirubin level will be artificially low. This could lead to misdiagnosis or underestimation of the severity of a condition.
Other light-sensitive tests:
Besides bilirubin, other tests that require light protection include:
- Vitamin A.
- Vitamin B2 (riboflavin).
- Vitamin B12.
- Porphyrins.
Importance of proper handling:
- Following proper procedures for handling and storing light-sensitive tests is crucial for ensuring accurate diagnosis and effective treatment.
