Accredited PT Providers-
| S. No. | Name | Place | Scheme | Brief/Areas |
| 1. | Interlaboratory Services (ILS), National Council for Cement & Building Materials (NCCBM) | Ballabgarh, Haryana | Simultaneous | Chemical & Mechanical Testing – Building Materials |
| 2. | BPCL Proficiency Testing, QA Laboratory, BPCL | Mumbai, Maharashtra | Simultaneous | Chemical Testing – Petroleum |
| 3. | CMC QAS, Department of Clinical Biochemistry, Christian Medical College, CMC | Vellore, Tami Nadu | Simultaneous | Medical Testing – Clinical Biochemistry |
| 4. | RML-Quality Assurance Program (RML-QAP) | Lucknow, Uttar Pradesh | Simultaneous | Medical Testing – Clinical Biochemistry, – Haematology, – Microbiology & Serology, – Histopathology, – Cytopathology |
| 5. | Fine Finish Organics Pvt. Ltd. | Taloja, Maharashtra | Simultaneous | Chemical & Mechanical Testing – Plastics & Polymers – Paints & Surface Coatings |
| 6. | National AIDS Research Institute, Proficiency Testing (PT) Unit | Pune, Maharashtra | Simultaneous | Medical Testing -HI -MS |
| 7. | Dr. Fixit Institute of Structural Protection & Rehabilitation, PT Division | Mumbai | Simultaneous | Non-Destructive & Mechanical Testing -Reinforced Cement Concrete |
| 8. | Global PT Provider Pvt. Ltd. | New Delhi | Simultaneous | Chemical, Mechanical, Biological & Non-Destructive Testing – Metal Testing, – Water, – Building Material, – Minerals & Ores, – Coal, Coke and other Solid Fuels, – Textile Material – Children Toys & Child Articles – Leather – Paint and enamels – Polymer and Plastic – Rubber |
| 9. | Metal Power Analytical (I) Pvt. Ltd.-PT Division | Mumbai | Simultaneous | Chemical Testing – Metals |
| 10. | Green Economy Initiatives private Limited | Mohali | Sampling & Simultaneous | Chemical & Mechanical Testing -Atmospheric Pollution (Ambient Air, Stack Emission, Noise) -Food & Agricultural Products (Honey & Honey Products, Fruits & Vegetable Products, Infant Foods, Cereals, Pulses & Cereal Products, Milk & Dairy Products, Herbs, spices & Condiments, Oils & Fats, Bakery & Confectionery Products, Others) -Residues in Food Products (Trace Metal Elements) -Soil & Rock (Soil) -Building Material (Cement, Aggregates, Others) -Metals & Alloys (TMT Steel Bars) -Drugs & Pharmaceuticals -Minerals -Fertilisers |
| 11. | Aashvi Proficiency Testing & Analytical Services | Hyderabad | Simultaneous | Chemical & Biological Testing – Food & Agricultural Products -Animal Food & Feeds -Biocides –Drugs & Pharmaceuticals –Fertilizers –Industrial & Fine Chemicals –Pesticide Formulations –Residues in Food Products & water –Soap detergent & Toiletries –Water –Precious metals- Gold & Silver |
| 12. | Trilogy Analytical Laboratory Private Limited | Hyderabad, Telangana | Simultaneous | Chemical Testing Food & Agricultural Products |
| 13. | ISHTM-AIIMS, External Quality Assurance Programme, Dept. of Hematology | Delhi | Simultaneous | Medical Testing – Hematology |
| 14. | Yadav Measurements Pvt. Ltd. (PTP) | Udaipur, Rajasthan | Sequential | Electrical Testing & ET Calibration Electrical Testing – Energy Meter, – Current Transformers, – voltage Transformer Electro-Technical Calibration – 3 Phase Reference Meter, – Digit Multimeter, – Current Transformer,- – Voltage Transformer |
| 15. | Landmark Material Testing and Research Laboratory Pvt. Ltd., PT Division | Jaipur, Rajasthan | Simultaneous | Mechanical & Non-Destructive Testing -Building Material -Soil |
| 16. | Indian Pharmacopoeia Commission (Indian Pharmacopoeia Laboratory) | Ghaziabad, Uttar Pradesh | Simultaneous | Chemical Testing -Drugs and Pharmaceuticals Products |
| 17. | National Test House (WR) | Mumbai, Maharashtra | Simultaneous | Chemical & Mechanical Testing -Building Materials |
| 18. | Horizon Analytical Laboratory Pvt. Ltd. | Pune, Maharashtra | Simultaneous | Chemical Testing -Water -Soil |
| 19. | Export Inspection Agency-Mumbai Laboratory, Pilot Test House | Mumbai | Simultaneous | Chemical Testing -Drugs in Shrimp, -Fish & Fishery Products |
| 20. | Export Inspection Agency-Chennai (Proficiency Testing Provider) | Chennai | Simultaneous | Biological Testing -Pathogen in Fish & Fishery Products |
| 21. | Export Inspection Agency-Kolkata Laboratory | Kolkata | Simultaneous | Chemical Testing -Heavy Metals in Fish & Fishery Products |
| 22. | IAMM EQAS, Department of Clinical Microbiology & Immunology, Sir Ganga Ram Hospital | New Delhi | Simultaneous | Medical Testing -Microbiology & Serology |
| 23. | CIMEC Infralabs Private Limited, PT Division | Ghaziabad, Uttar Pradesh | Simultaneous | Chemical, Mechanical & Electrical Testing -Building Materials -Metals & Alloy -Mechanical Properties of Materials -Cables & Wires |
| 24. | C I Proficiency Testing Pvt. Ltd. | Kota, Rajasthan | Sequential | Electro-Technical, Mechanical & Thermal Calibration |
| 25. | SCS Enviro Services Private Limited (PT Division) | Jaipur, Rajasthan | Simultaneous | Chemical Testing -Minerals & Ores -Soil & Rock -Building Material |
| 26. | Bureau Veritas Consumer Product Service (India) Private Limited, Proficiency Testing Provider | Noida, Uttar Pradesh | Simultaneous | Chemical & Mechanical Testing -Textile Materials -Leather -Toys & Toys Material |
| 27. | CMC VIROEQAS, Department of Clinical Virology, Christian Medical College | Vellore, Tamil Nadu | Simultaneous | Medical Testing -Microbiology & Serology |
| 28. | Edward Food Research and Analysis Centre Ltd. | Kolkata, West Bengal | Simultaneous | Chemical Testing -Water -Food & Agricultural Products -Marine/Aqua Culture Food Products -Residues in Food Products |
| 29. | Jalan Proficiency Testing Provider, Unit Jalan and Company | Delhi | Simultaneous | Chemical Testing -Metals & Alloys |
| 30. | HP PTP, Hindustan Petroleum Corporation Limited | Navi Mumbai, Maharashtra | Simultaneous | Chemical Testing -Petroleum & Petroleum Products |
| 31. | ITC Analytical Services, Agri Business Division, ITC Limited | Guntur, Andhra Pradesh | Simultaneous | Chemical Testing -Food & Agricultural Products |
| 32. | Hemshell Services-Proficiency Testing Division | Baroda, Gujarat | Simultaneous | Mechanical Testing -Plastics & Polymers |
| 33. | Fare Labs Private Limited | Gurugram, Haryana | Simultaneous & Sequential | Chemical & Biological Testing and -Food & Agricultural Products -Water Mechanical & Thermal Calibration |
| 34. | Envirocare Labs Pvt. Ltd. (PT Cell) | Thane, Maharashtra | Simultaneous | Biological Testing -Water -Waste Water -Food & Agricultural Products -Non-sterile pharmaceutical products |
| 35. | GES PT Division | Vadodara, Gujarat | Simultaneous | Mechanical Testing -Building Material -Soil & Rock |
| 36. | International Proficiency Testing House | Pune, Maharashtra | Simultaneous | Chemical Testing -Food & Agricultural Products |
| 37. | Deep Metallurgical Services | Thane, Maharashtra | Simultaneous | Chemical & Mechanical Testing -Metals & Alloys -Mechanical Properties of Materials |
| 38. | Quality Assurance, Titan company Limited, Jewellery Division | Hosur, Tamil Nadu | Simultaneous | Chemical Testing -Metals & Alloys |
| 39. | Proficiency Testing Provider Division, India Govt. Mint | Mumbai, Maharashtra | Simultaneous | Chemical Testing -Precious metals |
| 40. | Metropolis Healthcare Ltd./EQAS | Mumbai, Maharashtra | Simultaneous | Medical Testing – Clinical Biochemistry – -Clinical Pathology – Cytopathology – Haematology & Immunohaematology – Histopathology- Microbiology & Serology |
| 41. | Neu-QAP (Neuberg Anand Academy of Laboratory Medicine Pvt LTD Quality Assessment Program) | Bangalore, Karnataka | Simultaneous | Medical Testing – Clinical Biochemistry – Haematology & Immunohaematology – Histopathology – Microbiology & Serology – Cytogenetics |
| 42. | PTP services – Nemko India (Test Lab) Pvt Ltd. | Faridabad, Haryana | Simultaneous | Electrical & Electronics Testing |
| 43. | Chimera Translational Research Fraternity Pvt. Ltd. | Delhi | Simultaneous | Medical Testing – Haematology & Immunohaematology – Molecular Testing |
| 44. | The Bombay Textile Research Association, PT Division, | Mumbai, Maharashtra | Simultaneous | Chemical & Mechanical Testing – Textiles |
| 45. | National Referral Laboratory, ICAR-National Research Centre for Grapes | Pune, Maharashtra | Simultaneous | Chemical Testing – Food & Agricultural products fruits and vegetables |
| 46. | The Synthetic And Art Silk Mills Research Association (SASMIRA) | Mumbai, Maharashtra | Simultaneous | Chemical, Mechanical & Biological Testing -Textile |
| 47. | CALF, National Dairy Development Board | Gujarat | Simultaneous | Chemical, & Biological Testing – Food and Agricultural Poducts (Milk and milk products, Fats & Oils, Cattle Feed & Poultry feed and Nutritional Foods) |
| 48. | Meena International | Chennai, Tamil Nadu | Sequential | Non-Destructive Testing – Metals & Alloys |
| 49. | National Engineering Consultants And Testing Laboratory (PT Division) | New Delhi | Simultaneous
| Mechanical Testing – Building Materials |
| 50 | ISHTM-AIIMS External Quality Assurance Programme, Deptt. of Hematology | New Delhi | Simultaneous | Medical Testing |
Proficiency Testing Programmes by other agencies
NABL also encourages participation of applicant / accredited laboratories in Proficiency Testing programs conducted by other national & international bodies.