The most critical information to document on a specimen label for laboratory transport is the source of the sample. This ensures accurate processing and analysis of the specimen. Other administrative details, while important for billing and records, are not required on the specimen label itself. ;
The most important information to document on a specimen label is the source of the sample, which is crucial for accurate processing and analysis. Other administrative details are not necessary for the specimen label itself. Therefore, the chosen answer is D: Source of the sample.
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