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The seven CFSLs, the 33+ SFSLs, the district RFSLs, NFSU and CDFD, plus the BNSS Section 176(3) change that put state labs on the cordon line.
India runs forensic science across four tiers: seven Central Forensic Science Laboratories (CFSLs) under the Directorate of Forensic Science Services (DFSS, MHA, 2003), thirty-three-plus State Forensic Science Laboratories (SFSLs) under each state's home or police department, district-level Regional Forensic Science Laboratories (RFSLs), and two specialist national institutions: the National Forensic Sciences University (NFSU) at Gandhinagar and the Centre for DNA Fingerprinting and Diagnostics (CDFD) at Hyderabad. Each tier has a defined jurisdiction and case-class on intake. CBI-investigated cases route to CFSLs. Conventional state cases go to SFSLs. District work that the SFSL cannot absorb goes to the RFSL. DNA in inheritance, paternity and high-volume disasters routes to CDFD. The 2023 BNSS Section 176(3) mandate, requiring an FSL visit for any offence punishable with seven-plus years, has tripled the workload on the state and regional labs almost overnight.
The thing to internalise: the institutional map is not a hierarchy, it is a jurisdiction grid. A CFSL is not "senior" to an SFSL the way a High Court is to a District Court. They handle different agencies. Mixing this up is the single most common mistake in NFSU interviews. Read the next twenty minutes with that frame in mind.
MHA-controlled, founded 2003, runs the seven CFSLs.
The Directorate of Forensic Science Services sits in the Ministry of Home Affairs in New Delhi. It was founded in 2003 to consolidate what had been a scattered set of laboratories run by different parts of the central government. Before 2003, the CFSL at Kolkata was under the CBI, the CFSL at New Delhi was under the Intelligence Bureau, and the GEQD (Government Examiner of Questioned Documents) offices reported to yet another wing. DFSS pulled all of them under one umbrella and gave them a common SOP framework.
DFSS does four things in practice. It runs the seven CFSLs as central facilities. It runs the three Government Examiners of Questioned Documents offices at Shimla, Kolkata and Hyderabad. It issues the national-level forensic SOPs that the state SFSLs are expected to align with. And it coordinates with NFSU on training, accreditation and the National Forensic Information System (NaFIS). It does not control the state SFSLs directly; those report to their respective state home departments.
The annual MHA report you should know for any FACT or NFSU interview is the Crime in India volume from NCRB plus the Annual Report of DFSS. The two together give you backlog numbers, evidence-class distribution, and the impact of BNSS 176(3) on intake.
One table, one row per lab. This is the standard short-answer prompt.
There are exactly seven Central Forensic Science Laboratories as of 2026. Each has a primary specialisation that gets quoted in textbooks, though in practice they all run a full general-evidence portfolio. The Hyderabad lab has, since the late 2010s, been the de-facto flagship.
| CFSL | Founded | Primary specialisation / notable role |
|---|---|---|
| CFSL Hyderabad | 1968 | Cyber forensics, narcotics, DNA. Currently the de-facto flagship lab. Home to the Hyderabad cyber-forensics centre of excellence. |
| CFSL Kolkata | 1957 | Oldest CFSL. Historically the lead lab for forensic biology, serology and questioned documents. Co-located with GEQD Kolkata. |
| CFSL Chandigarh | 1933 (as CFL) / re-org 1968 | Forensic ballistics, explosives, and chemistry. The traditional armaments-and-explosives shop. |
| CFSL New Delhi | 1968 (CBI-CFSL) | CBI's primary lab. Handles high-profile CBI investigations end to end. Strong in toxicology and computer forensics. |
| CFSL Pune | 2010 | Set up to serve the western region. Strong in chemistry, narcotics and explosives. Tied to the Pune-Maharashtra anti-terror caseload. |
Director at the top, six to eight divisions below.
A State Forensic Science Laboratory is the workhorse of Indian forensic practice. There are now thirty-three-plus SFSLs across the states and union territories (every state has one, the larger UTs have one, and a few states have more than one after recent restructuring). Each SFSL reports to its state's Home Department or Police Department, not to DFSS.
The internal structure is fairly uniform across states, even though the names of divisions vary.
Where the volume actually lives.
Below the SFSL, most large states run a network of Regional Forensic Science Laboratories at the district or zonal level. Uttar Pradesh runs ten-plus, Maharashtra eight, Tamil Nadu seven, Karnataka five, and so on. The RFSL is where the everyday narcotics, dowry-death viscera, and routine document cases actually get done.
The functional split between SFSL and RFSL varies by state but the working rule is:
The reason the RFSL tier exists is geography. India's largest states are bigger than most European countries, and a beat constable in Bastar cannot drive eight hours each way to deposit a packet of ganja at the SFSL Raipur. An RFSL at the district level keeps turnaround under two weeks for routine work. Without it, the SFSL backlog would be unmanageable.
One teaches, one does DNA. Both report outside DFSS.
Two national-level institutions sit outside the CFSL-SFSL-RFSL grid and are worth their own block in any answer.
NFSU, Gandhinagar (2020). The National Forensic Sciences University was established by an Act of Parliament in 2020, upgrading what was previously the Gujarat Forensic Sciences University (GFSU, 2009). It is a deemed-to-be university under the Ministry of Home Affairs and runs MSc, MTech, MA, PhD and short-course programmes across forensic science, cyber forensics, criminology, behavioural science and forensic psychology. NFSU also runs a satellite campus at Delhi and is expanding regional campuses (Goa, Tripura, Manipur, Pune, Bhopal, Dharwad). For the FACT entrance, NFSU is the gateway university.
CDFD, Hyderabad (1995). The Centre for DNA Fingerprinting and Diagnostics is a Department of Biotechnology autonomous institute, set up by Lalji Singh in 1995. Singh is regarded as the father of Indian DNA fingerprinting. CDFD handles disputed paternity, inheritance, identification in mass disasters (the 2004 tsunami, the 2013 Uttarakhand floods, the 2021 Joshimath ice-burst), and increasingly the DNA work for high-profile criminal cases referred by courts. CDFD also runs the Indian DNA database research and the BTISnet bioinformatics infrastructure.
The institutional difference that gets tested. NFSU teaches and certifies. CDFD does specialist DNA work. The seven CFSLs and the SFSL/RFSL grid do operational forensic casework. The four functions are distinct; mixing them up loses marks.
| Institution | Parent ministry | Founded | Primary function |
|---|---|---|---|
| NFSU Gandhinagar | Home Affairs | 2020 (Act of Parliament; successor to GFSU 2009) | Forensic teaching, research, training. Gateway university for FACT. |
Section 176(3) is the headline. Two more provisions follow.
The Bharatiya Nagarik Suraksha Sanhita came into force on 1 July 2024 and reshaped how labs interact with field investigation. Three provisions matter directly for the institutional map.
The practical change for an aspirant: where earlier you could clear FACT or UGC-NET without knowing the names of the state labs, you can't any more. Examiners are using the BNSS as a hook to test institutional literacy. The names of the seven CFSLs, the founding years of DFSS (2003) and NFSU (2020), and the practical meaning of Section 176(3) are now near-guaranteed.
How many Central Forensic Science Laboratories (CFSLs) are operational in India as of 2026?
| CFSL Bhopal | 2010 | Central-region lab. Particular strength in document examination, fingerprints and lie-detection-class work (polygraph, narco, BEOS). |
| CFSL Guwahati | 2010 | North-east regional lab. Handles the seven sister states and is increasingly central in wildlife forensics and counter-insurgency casework. |
A working trick for the exam: the first four CFSLs (Hyderabad, Kolkata, Chandigarh, Delhi) are the legacy set established by the late 1960s. The latter three (Pune, Bhopal, Guwahati) are the post-2010 regional expansion. If a question asks "how many CFSLs were operational in 1990," the answer is four.
All seven CFSLs are NABL-accredited for at least their core divisions, though scope-of-accreditation varies. NABL accreditation under ISO/IEC 17025 is increasingly demanded by Indian courts before expert opinion is admitted, particularly after a series of 2018 to 2022 High Court observations on lab quality.
The jurisdiction rule: an SFSL handles cases investigated by the state police of that state. A CFSL handles cases investigated by central agencies (CBI, NIA, ED, NCB) or state-police cases that the central government has transferred. There is no formal hierarchy between an SFSL and a CFSL. A state IO cannot "appeal" an SFSL report to a CFSL; the two labs serve different agencies. The only path is a re-examination ordered by the trial court, which can route the second analysis to a CFSL, a different SFSL, or NFSU.
For routing on intake, see the worked example below.
| CDFD Hyderabad | Department of Biotechnology | 1995 (founded by Lalji Singh) | Specialist DNA: paternity, inheritance, mass-disaster ID. |
| DFSS New Delhi | Home Affairs | 2003 | Apex coordination of the seven CFSLs and the three GEQD offices. |
| The seven CFSLs | Home Affairs (via DFSS) | 1957 onwards | Operational casework for CBI, NIA, ED, NCB and central transfers. |
For the international counterparts (Interpol DVI, ENFSI, FBI Lab, AAFS) and how India coordinates with them, see Crime Scene Management: National and International.