Accreditation Information
| No. | Laboratory Name | Number of Branches | Accreditation Number | Certificate |
| 1 | Foundation for Industrial Development National Food Institute | - | PTP - 0002 | |
| 2 | Bureau of Quality and Safety of Food, Department of Medical Sciences | - | PTP - 0004 | |
| 3 | Central Laboratory (Thailand) Co., Ltd. | - | PTP - 0008 | |
| 4 | Bureau of Cosmetics and Hazardous Substances, Department of Medical Sciences, Ministry of Public Health | - | PTP - 0011 | |
| 5 | Proficiency Testing Provider Department, BETAGRO SCIENCE CENTER COMPANY LIMITED | - | PTP - 0018 | |
| 6 | Industrial Metrology and Testing Service Centre,Thailand Institute of Scientific and Technological Research | - | PTP - 0021 | |
| 7 | System Research of Soil and Water Quality Sub Group, Agricultural Chemistry Development Office, Department of Agriculture Group, Agricultural Production Science Research and | - | PTP - 0024 | |
| 8 | Division of Development of Cane Sugar and Related Sugar, Office of the Cane and Sugar Board | - | PTP - 0027 | |
| 9 | QUALITY METROLOGY SOLUTION CO.,LTD. | - | PTP - 0029 | |
| 10 | NATS LAB Proficiency Testing Center (Asian Institute of Technology) | - | PTP - 0031 | |
| 11 | Business Unit 3, Technology Promotion Association (Thailand-Japan) | - | PTP - 0032 | |
| 12 | National Institute of Animal Health, Department of Livestock Development | - | PTP - 0035 |