Question 19

Ammonia specimens should be placed in an ice slurry if there is a delay for processing.

Ammonia levels in the blood can be affected by temperature changes, making it critical to keep the specimen cold until testing. Placing it in an ice slurry helps preserve its stability and accuracy.

A) Vitamin B6

Vitamin B6 does not require refrigeration or an ice slurry for preservation. While it is important to handle it properly, it is less sensitive to temperature changes compared to ammonia.

B) Vitamin A

Vitamin A specimens are also not typically placed in an ice slurry. They can be processed at room temperature and do not have the same stability concerns as ammonia.

C) Ammonia

Ammonia specimens must be placed in an ice slurry to prevent degradation and ensure accurate results. This practice is essential as ammonia levels can rise significantly if the specimen is not kept cold.

D) Bilirubin

Bilirubin specimens require protection from light rather than cold temperatures. They should be wrapped in aluminum foil to prevent degradation, making an ice slurry unnecessary.

Conclusion

Ammonia is unique among the options provided in that it specifically requires placement in an ice slurry to maintain its stability during processing delays. All other options, including Vitamin B6, Vitamin A, and Bilirubin, do not necessitate this type of temperature control, underscoring the importance of handling ammonia specimens correctly to ensure accurate laboratory results.