How often should needles used to deliver VDRL antigen be checked?

The correct answer is that needles used to deliver VDRL (Venereal Disease Research Laboratory) antigen should be checked daily. This practice is crucial for maintaining the accuracy of test results and ensuring patient safety.

Frequent checking of the needles is essential because the integrity of the needle can impact the antigen delivery, which in turn affects the quality of the test performed. Ensuring that the needles are functioning properly every day helps identify any issues, such as blockage or deterioration, that could lead to inaccurate results or complications during testing.

Regular assessment is a standard protocol in laboratory practices to uphold the reliability of test outcomes and to minimize risks associated with improper equipment use.