The adoption of INBS's drug screening system by a notable company like P&O Ferries could be seen as a validation of the technology, which may lead to increased investor confidence and interest in INBS. The significant cost savings for P&O Ferries could also highlight the economic benefits of INBS's product, potentially attracting more customers. This news is likely to have a positive short-term impact on INBS's stock price as it suggests potential for growth and increased market penetration.