The world body has set standards for such accreditation under its strengthening laboratory management towards accreditation (SLMTA) programme.
The 24 participants are from Ghana, Kenya, Malawi, Uganda and the US.
Opening the workshop, a Programme Manager of the National Aids Control Programme (NACP), Dr Nii Akwei Addo, said the trainers would transfer the knowledge and skills they would acquire at the workshop to others to enhance the performance of laboratory practitioners in the participating countries.
He said he was optimistic that the programme would enhance the capacity of the participants to enable them to deliver improved services.
The workshop, being organised by the Centre for Disease Control (CDC), in collaboration with the President's Malaria Initiative (PMI), is being implemented by the United States Agency for International Development (USAID), as well as the NACP.
The US President's Emergency Plan for AIDS Relief (PEPFAR) is supporting the training programme through the Ghana Health Service.
A resident advisor of the CDC, Dr Phillips Ricks, said the workshop would equip the laboratory professionals with special skills for teaching and mentoring their peers.
The two-week intensive programme will teach participants how to use SLMTA tool kits to pass on their knowledge and experiences from the training programme to others.
By Caroline Boateng/Daily Graphic/Ghana