National Accreditation Board for Testing and Calibration Laboratories


National Accreditation Board for Testing & Calibration Laboratories (NABL)
NABL Official LOGO Registered.png
Merged intoQuality Council of India
Formation1988; 34 years ago (1988)
FoundersDepartment of Science and Technology (India)
PurposeAccreditation services
Professional title
Region served
Pan India, International
ServicesAccreditation Services
Key people
N. Venkateswaran
Main organ
Governing Body
AffiliationsDepartment for Promotion of Industry and Internal Trade (DPIIT)
Ministry of Commerce and Industry (India)
Government of India

National Accreditation Board for Testing and Calibration Laboratories (NABL) provides accreditation to Conformity Assessment Bodies (Laboratories) in India. NABL Schemes include Accreditation (Recognition) of Technical competence of testing, calibration, medical testing laboratories, Proficiency testing providers (PTP) & Reference Material Producers (RMP) for a specific scope following ISO/IEC 17025, ISO 15189, ISO/IEC 17043[2] & ISO 17034:2016[3] Standards. It has Mutual Recognition Arrangement (MRA) with Asia Pacific Laboratory Accreditation Cooperation (APLAC), International Laboratory Accreditation Cooperation (ILAC).

NABL is a constituent board of Quality Council of India which is an autonomous body setup under Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce and Industry, Government of India.[4]

NABL provides accreditation in all major fields of Science and Engineering such as Biological, Chemical, Electrical, Electronics, Mechanical, Fluid-Flow, Non-Destructive, Photometry, Radiological, Thermal & Forensics disciplines under testing facilities and Electro-Technical, Mechanical, Fluid Flow, Thermal, Optical & Radiological disciplines under Calibration facilities. In the field of Medical Testing laboratories accreditation is granted in Clinical Biochemistry, Clinical Pathology, Haematology & Immunohaematology, Microbiology & Serology, Histopathology, Cytopathology, Genetics, Nuclear Medicine (In-vitro tests only) disciplines. In addition, NABL offers accreditation for Proficiency testing providers & Reference Material producers for which it has APLAC MRA.

Benefits of accreditation

NABL is a Full member (ILAC MRA signatory) to ILAC[5] as well as APLAC Mutual Recognition Arrangements (MRA),[6] based on mutual evaluation and acceptance of other MRA Partner laboratory accreditation systems. Such international arrangements facilitate acceptance of test / calibration results between countries to which MRA partners represent.

This developing system of international mutual recognition agreements between accreditation bodies has enabled accredited laboratories to achieve a form of international recognition, and allowed test data accompanying exported goods to be readily accepted on overseas markets amongst the countries which have already qualified as significant to ILAC Arrangements.[7] This effectively reduces costs for both the exporters and the importers, as it reduces or eliminates the need for products to be re-tested in another country.

A Unique benefit of NABL accreditation is the recognition by various government bodies[8] and regulators. In India, NABL accreditation is usually the precursor to various government/ regulator/ statutory body recognition's.

NABL being a governmental body conducts integrated assessments with regulators such as FSSAI, EIC, APEDA, etc. Integrated assessments simplify the process of recognition, as the laboratory can get accredited and recognized by the regulator in one combined assessment instead of the separate multiple assessments which are usually needed.

[9] [10] [11] [12]

Training courses

NABL undertakes following courses:-

  1. ISO/IEC 17025 Assessor's Training Course
  2. ISO 15189 Assessor's Training Course
  3. ISO/IEC 17043 Assessor's Training Course
  4. ISO/IEC 17043 Four Days Training
  5. ISO 17034 Assessor's Training Course
  6. ISO 17034 Three Days Training

Laboratory Conclaves

NABL conducts laboratory conclaves yearly.[13] In 2019, 8th National Conclave for Laboratories was conducted in Chennai.[14]

Scope of accreditation

NABL's scope for accreditation extends to:-

Testing Laboratories: Biological, Chemical, Electrical, Electronics, Fluid-Flow, Mechanical, Non-Destructive, Photometry, Radiological and Thermal.

Calibration Laboratories: Electro-Technical, Mechanical, Fluid Flow, Thermal & Optical, Radiological.

Medical Laboratories: Clinical Biochemistry, Clinical Pathology, Haematology and Immuno-haematology, Microbiology and Serology, Histopathology, Cytopathology, Genetics, Nuclear Medicine (in-vitro tests only).

Applying for NABL Accreditation

Laboratories seeking NABL Accreditation can apply on NABL Web Portal.


  1. ^ Chandra (1988). "National Measurement System in India". 1988 Conference on Precision Electromagnetic Measurements. pp. 257–258. doi:10.1109/CPEM.1988.671284. S2CID 109948339.
  2. ^ "ISO/IEC 17043:2010".
  3. ^ "ISO 17034:2016".
  4. ^ Yadav S, Mandal G, et al. (11 May 2021). "75th Foundation Day of CSIR-National Physical Laboratory: Celebration of Achievements in Metrology for National Growth". MAPAN-Journal Metrology Society of India. 36: 1–32. doi:10.1007/s12647-021-00442-4. PMC 8110472.
  5. ^ "ILAC Signatory". ILAC. 25 January 2018.
  6. ^ "APLAC MRA Signatory". APLAC. 25 January 2018.
  7. ^ Aswal, DK (30 May 2020). "Quality Infrastructure of India and Its Importance for Inclusive National Growth". MAPAN-Journal Metrology Society of India. 35 (2): 139–150. doi:10.1007/s12647-020-00376-3. PMC 7261038.
  8. ^ "Supreme Court directs approved govt, private labs to conduct free testing for Covid-19". The Print. 8 April 2020.
  9. ^ Sinha M, Saini S, et al. (2018). "Current status and way forward for National Accreditation Board for Testing and Calibration Laboratories Accreditation of Laboratories in Government Organizations". Indian Journal of Pathology and Microbiology. 61 (3): 461–463. doi:10.4103/IJPM.IJPM_630_17. PMID 30004086. S2CID 51623808.
  10. ^ Verma, M; Dahiya, K; Ghalaut, VS; Dhupper, V (2018). "Assessment of quality control system by sigma metrics and quality goal index ratio: A roadmap towards preparation for NABL". World Journal of Methodology. 8 (3): 44–50. doi:10.5662/wjm.v8.i3.44. PMC 6275555. PMID 30519539.
  11. ^ Handoo, Anil; Sood, Swaroop Krishan (June 2012). "Clinical laboratory accreditation in India". Clinics in Laboratory Medicine. 32 (2): 281–292. doi:10.1016/j.cll.2012.04.009. PMID 22727005.
  12. ^ V, Umanath; Alam, Nasna Rasheeda; A, Vidya Gayathri. "ISO/IEC 17025:1999 - Compliance to Clinical Laboratory and Process of Accreditation". Journal of the Academy of Hospital Administration. 18 (1).
  13. ^ "Sakshi Telugu Daily Chennai City epaper dated Sun, 15 Dec 19". (in Telugu).
  14. ^ "Annual national conclave of NABL". The Times of India.

External links

  • Official website