Final answer:
According to NAVAIR 17-15-50.2, the laboratory should advise the customer activity regarding abnormal sample results no later than 24 hours after sample receipt.
Step-by-step explanation:
The question is asking how long after sample receipt should the laboratory advise the customer activity in the case of abnormal results, according to NAVAIR 17-15-50.2. According to the NAVAIR manual, the laboratory should advise the customer activity no later than 24 hours after sample receipt for samples with abnormal results.