The implementation of standardized criteria involves several steps. Firstly, laboratories must ensure that their personnel are well-trained and familiar with the guidelines. This often requires continuous education and proficiency testing. Secondly, laboratories must use validated reagents, equipment, and procedures to ensure consistency. Thirdly, quality control measures, such as regular audits and peer reviews, are essential to maintain adherence to the standards. Lastly, digital pathology and image analysis tools can aid in the consistent application of standardized criteria.