How many spiked samples should be taken during an inspection?

During a lead inspection, it is crucial to collect spiked samples to evaluate the accuracy and reliability of the sampling process. The guidance for spiked samples typically suggests that one spiked sample is adequate for quality control purposes. This single sample provides a benchmark against which the results of other samples can be compared.

A single spiked sample is sufficient to determine whether the testing method is providing accurate results. If quality control is needed or if the results are questionable, additional spiked samples can be considered in future assessments, but for standard inspections, one is generally sufficient. This approach helps streamline the inspection process while still ensuring rigorous quality assurance.