True or False: Field blanks and spikes should be labeled distinctly when processed at an independent lab.

Field blanks and spikes should indeed be labeled distinctly when processed at an independent lab to maintain clarity and integrity in testing processes. Distinct labeling ensures that there is no confusion between these two elements, which serve different purposes in radon measurement.

Field blanks are used to assess the potential contamination that might occur during sample collection or handling, while spikes are introduced samples that help evaluate the performance of the testing method. By clearly labeling them, laboratories can accurately interpret the results and ensure that any potential errors are identified and addressed. This practice is essential for ensuring the reliability and validity of the data obtained from radon measurements, as it adheres to protocols that enhance the quality control of the testing process.