This document is an operational manual for implementing provider-initiated HIV testing and counseling in clinical settings in Kenya. It provides guidance on initiating provider-initiated HIV testing and counseling at the district and health facility levels, establishing necessary health systems for service delivery including human resources, infrastructure and supply chain management. It also offers guidance on advocacy and communication strategies. The manual outlines models for provider-initiated HIV testing and counseling in both outpatient and inpatient settings, and protocols for testing, counseling, referrals and linkages. It provides guidance on quality management, recording and reporting of HIV testing data, and the roles of management teams in coordinating provider-initiated HIV testing and counseling services.