Does a court have to order a DNA test whenever one party asks for it?
Not necessarily.
A DNA test may be scientifically capable of answering a biological question, but that does not automatically make it legally necessary in every proceeding. A recent decision of the Gauhati High Court dated 21 August 2026 illustrates this distinction in the context of a child-maintenance dispute.
In Rafique Uddin Sekh @ Rafique Uddin v. Saina Begum Sheik, the Court declined the petitioner's request for DNA testing after considering an earlier criminal-court finding concerning the relationship between the parties and the birth of the child. The High Court also found no basis to interfere with the revisional order directing maintenance for the minor child.
For forensic scientists and forensic-law students, the decision is important for a reason that extends beyond paternity disputes: the availability of a forensic technology does not by itself determine whether a court should order its use.
The scientific question and the legal question are related — but they are not identical.
What the Gauhati High Court Decided
The proceedings arose from M.R. Case No. 187/2015, instituted under Section 125 of the Code of Criminal Procedure, 1973. The respondent sought maintenance for herself and her minor child. The Chief Judicial Magistrate, Hailakandi, dismissed the application on 9 January 2019. In Criminal Revision No. 25/2019, the Sessions Judge, Hailakandi, partly allowed the claim and directed the petitioner to pay ₹3,000 per month towards maintenance of the minor child, including arrears from 9 January 2019.
The petitioner subsequently approached the Gauhati High Court under Section 482 Cr.P.C., challenging the revisional order. Among the arguments raised were alleged contradictions in the evidence concerning the relationship, pregnancy and timing of events, together with reliance on a medical report.
A significant feature of the case was an earlier criminal proceeding. According to the judgment summary and the underlying judgment identified by the reporting source, the Sessions Court had found that the petitioner had maintained a physical relationship with the respondent on the promise of marriage and that the relationship resulted in the birth of the child. The petitioner had nevertheless been acquitted of the charge under Section 376 IPC.
The High Court considered whether that earlier finding could be relied upon in the subsequent maintenance proceeding and whether a fresh DNA examination should be directed. It answered those questions against the petitioner.
The Court treated the earlier finding concerning the relationship as significant to the maintenance proceedings and declined to order DNA testing. It also found no jurisdictional or legal error warranting interference under Section 482 Cr.P.C. The petition was dismissed, leaving the maintenance direction intact.
The important point
The Court did not decide that DNA technology is scientifically incapable of determining biological relationships. Instead, the question was whether, in the circumstances already established before the Court, another genetic examination was legally necessary. That distinction is central to understanding the judgment.
Why the Court Did Not Order a Fresh DNA Test
The High Court referred to Supreme Court authorities dealing with the cautious use of DNA testing in paternity disputes, including Goutam Kundu v. State of West Bengal, Sharda v. Dharmpal, Bhabani Prasad Jena v. Convenor, Secretary, Orissa State Commission for Women, and the more recent Ivan Rathinam v. Milan Joseph.
The broader principle emerging from these authorities is that a DNA examination should not ordinarily become a roving inquiry merely because one party wants additional scientific evidence. The Court therefore had to distinguish four separate questions:
| Question | What it means |
|---|
| Is DNA testing scientifically possible? | Can genetic analysis answer the biological question? |
| Is DNA testing scientifically relevant? | Would the proposed test generate evidence relevant to an issue before the court? |
| Is DNA testing legally necessary? | Does the court actually need that examination to reach a just decision? |
| What are the consequences? | Would compulsory testing affect privacy, dignity, legitimacy, the child or other legally protected interests? |
These questions cannot simply be collapsed into one. The fact that a laboratory can perform a paternity analysis does not mean that every disputed paternity allegation requires a court-directed DNA examination.
In this case, the High Court considered the earlier finding concerning the parties' physical relationship, the evidentiary record and the absence of a sufficiently established basis for a fresh DNA inquiry. The Court noted that the petitioner had not demonstrated the kind of non-access or strong prima facie basis that the cited Supreme Court authorities identify as important in deciding whether genetic testing should be ordered.
DNA Evidence: What Can a DNA Test Actually Establish?
DNA profiling is a powerful biological identification and relationship-testing technology, but its evidentiary meaning depends on what question is being tested, which samples are examined, and how the genetic results are statistically interpreted.
In a conventional paternity investigation, analysts may compare genetic profiles obtained from a child, the alleged father and, where available and appropriate, the mother. Modern forensic relationship testing commonly relies on short tandem repeat (STR) markers, with the genetic information observed at multiple loci compared under competing biological hypotheses.
The laboratory does not simply produce a statement saying "DNA proves paternity." Instead, the genetic findings are interpreted statistically. The International Society for Forensic Genetics has recommended the use of likelihood-ratio principles in paternity testing. The paternity index is a likelihood ratio comparing the probability of the observed genetic findings under competing hypotheses:
- H₁: the tested man is the biological father.
- H₂: the biological father is an unrelated man from the relevant population.
The genetic evidence can then be evaluated by asking how much more probable the observed genetic results are under H₁ than under H₂.
Exclusion and inclusion
A relationship analysis can produce an exclusion when the observed genetic inheritance is incompatible with the proposed relationship, subject to appropriate consideration of mutation and other technical factors. An apparent inclusion means that the genetic findings are consistent with the proposed relationship; the evidentiary strength of that consistency is then expressed statistically.
The result therefore depends on:
- the quality and suitability of the samples
- the reference individuals tested
- the genetic markers examined
- population-frequency data
- possible mutation
- the biological relationship being tested
- the statistical model, and the assumptions underlying the calculation
ISFG recommendations specifically address these statistical and population-genetic considerations in paternity testing. Modern forensic interpretation can also involve probabilistic-genotyping approaches and likelihood ratios, although the precise analytical approach depends on the type and complexity of the evidence. SWGDAM maintains dedicated guidelines covering autosomal STR interpretation, probabilistic genotyping and likelihood-ratio reporting.
DNA answers a biological question — not every legal question
This is particularly important in litigation. A DNA test may answer:
Is the tested man genetically consistent with biological fatherhood of the child?
It does not automatically answer:
- whether a person legally qualifies as a parent
- whether maintenance is legally payable
- whether a relationship existed in a particular legal sense
- whether a criminal offence occurred
- whether a previous judicial finding should be reopened
- or whether the interests of the child justify genetic testing
Those are legal questions.
DNA Evidence vs. Legal Decision-Making
A useful way of understanding this case is:
A scientifically possible test is not necessarily a legally necessary test.
Scientific evidence is generated through a methodology designed to answer a defined empirical question. Judicial decision-making, by contrast, involves determining which facts are legally relevant, which evidence can properly be considered, what procedural rules apply and what relief the law permits.
This distinction does not diminish forensic science — it clarifies its proper role. A forensic scientist should not be expected to determine whether a court ought to order a DNA test. The scientist's role is to explain what the proposed examination can establish, what samples are required, what limitations apply, and how the resulting genetic evidence should be interpreted. The court decides whether that examination is justified within the litigation.
Scientific capability ≠ automatic judicial necessity
The Importance of Existing Judicial Findings
One of the more legally significant aspects of the decision is its treatment of the earlier criminal-court finding. The High Court relied on the earlier adjudication concerning the parties' relationship and considered that finding relevant to the subsequent maintenance proceeding. The judgment discussed authorities including Pritam Singh v. State of Punjab, Bhagat Ram v. State of Rajasthan and State of Rajasthan v. Tarachand Jain concerning the effect that prior adjudications may have in subsequent criminal proceedings.
This should not be simplified into the proposition that every factual observation in one criminal case automatically binds every later proceeding. The legal effect of an earlier finding depends upon factors such as:
- the nature of the earlier proceeding
- the issue actually adjudicated
- the parties involved
- the statutory framework
- the nature of the finding
- whether the finding was challenged
- and the legal consequences attached to that finding
In the present case, the High Court considered the earlier finding concerning the relationship to be sufficiently significant to the maintenance proceeding and declined to reopen the issue through a fresh DNA inquiry.
A forensic result enters an evidentiary ecosystem. It does not exist independently of the procedural history of a case.
Can Courts Order DNA Tests in India?
Yes. Indian courts have repeatedly recognised circumstances in which DNA or other medical/genetic examinations can be directed. But the Supreme Court has also repeatedly cautioned against treating genetic testing as a routine response to every allegation concerning paternity.
Precedent
01
(1993) 3 SCC 418
Goutam Kundu v. State of West Bengal
A foundational authority holding that courts should not order blood/DNA-type testing merely to conduct a roving inquiry, and should carefully consider the consequences of compelling such examination.
Precedent
02
(2003) 4 SCC 493
Sharda v. Dharmpal
Recognised the authority of a matrimonial court to direct medical examination in appropriate circumstances, while emphasising the need for a sufficiently strong case and appropriate judicial consideration.
Precedent
03
(2010) 8 SCC 633
Bhabani Prasad Jena v. Convenor, Secretary, Orissa State Commission for Women
Reconciled the principles in Goutam Kundu and Sharda, emphasising that DNA testing in paternity disputes should not be directed routinely and that courts should balance competing interests and consider whether the examination is eminently needed for a just decision.
Precedent
04
Decided 20 Feb 2023 · (2024) 7 SCC 773
Aparna Ajinkya Firodia v. Ajinkya Arun Firodia
Declined a DNA test sought in a matrimonial dispute where the test was principally being used to support allegations of adultery rather than because genetic parentage itself was indispensable to resolving the dispute. The Court stressed the child's interest in not having legitimacy questioned frivolously.
Precedent
05
2025 INSC 115
Ivan Rathinam v. Milan Joseph
Further developed the analysis, considering the circumstances in which a DNA test may be ordered and emphasising the need to assess both the evidentiary need and the consequences for the parties.
The Gauhati High Court's 21 August 2026 decision must be understood against this existing line of authority rather than as creating a new rule that DNA tests can never be ordered.
DNA Testing and Privacy
Genetic testing is unusual among forms of evidence because the examination can reveal deeply personal biological information. The Supreme Court's nine-judge Constitution Bench in Justice K.S. Puttaswamy (Retd.) v. Union of India, (2017) 10 SCC 1, recognised privacy as a constitutionally protected right connected with dignity, autonomy and personal liberty, and recognised informational control as an important dimension of privacy.
A compulsory DNA test can therefore raise questions concerning:
- Bodily autonomy — the person's body is being subjected to an examination
- Informational privacy — genetic information is highly personal information
- Dignity — genetic findings can affect family identity and social relationships
- Proportionality — the intrusion must be justified in relation to the legitimate purpose
- Children's interests — genetic testing can affect a child's identity and legitimacy
- Truth-finding — courts also have a legitimate interest in resolving genuinely material factual disputes
The legal problem is consequently not simply "Can DNA tell us the truth?" It is also "Is obtaining that genetic information justified and necessary in this particular proceeding?" That is why privacy and forensic science cannot be treated as completely separate disciplines in modern forensic-law practice.
What Forensic Scientists Should Learn From This Case
01
DNA testing is question-driven
Before testing begins, the forensic question must be defined — identity, biological relationship, source attribution, mixture interpretation, or kinship reconstruction. A poorly defined question can produce technically correct analysis that is legally unhelpful.
02
Sample selection matters
A relationship analysis depends on the appropriate reference samples. The alleged father, child and, where appropriate, the mother can provide different evidentiary structures. More complex relationships may require additional relatives or specialised markers.
03
Interpretation matters as much as profiling
Producing STR profiles is only one part of the process. The evidentiary significance of those profiles requires appropriate statistical interpretation, with ISFG recommendations emphasising likelihood-ratio approaches and transparent assumptions.
04
Laboratory quality does not eliminate legal-context problems
Even a technically excellent laboratory cannot solve a legally irrelevant question. Validation, quality assurance and analytical competence ensure the science is robust — they do not determine whether the court should order the examination.
05
Scientists should understand the evidentiary question
A forensic scientist should know what proposition the analysis is intended to address, and a report should clearly distinguish what the genetic data show from what a court may ultimately conclude from the totality of evidence.
Forensic Students' Takeaway
For students of Forensic Science, Forensic Biology, DNA Profiling, Law and Criminology, this case offers an important interdisciplinary lesson.
Forensic Science students
Learn not only how STR profiling works, but also why the examination was requested and what proposition the result is expected to address.
DNA Profiling students
Understand that a DNA profile is not synonymous with a conclusion — statistical interpretation, reference samples, population genetics and hypotheses all matter.
Law students
Do not treat DNA evidence as automatically superior to all other evidence. The question is whether the test is legally justified and necessary within the circumstances of the case.
Criminology students
Recognise that forensic technologies operate within institutional and legal systems — technology does not replace adjudication.
Researchers
The case demonstrates the need for interdisciplinary research connecting forensic genetics, evidence law, constitutional privacy and judicial decision-making.
What This Judgment Does NOT Mean
This decision should not be overread.
- It does not mean DNA testing is generally unnecessary. DNA testing remains one of the most powerful tools available for resolving appropriately framed biological-relationship and identification questions.
- It does not mean DNA evidence is unreliable. Nothing in the decision establishes that proposition; the refusal was based on the legal and evidentiary circumstances of the case, not the reliability of DNA science.
- It does not establish that courts can never order DNA tests. Indian Supreme Court precedent clearly recognises circumstances in which such testing may be ordered.
- It does not replace scientific evidence with assumptions. Where a DNA examination is legally necessary, properly collected samples and scientifically sound analysis remain essential.
- It does not mean a previous finding will always prevent later scientific examination. Whether an earlier finding affects a later request depends on the legal and procedural circumstances of the particular case.
A litigant does not acquire an automatic entitlement to genetic testing merely by requesting it.
Conclusion
The Gauhati High Court's 21 August 2026 decision provides a useful illustration of the boundary between forensic capability and judicial necessity. DNA profiling can provide exceptionally powerful evidence about biological relationships. But the existence of that technology does not mean that a court must order testing whenever paternity is questioned.
The decision to direct genetic testing must be understood within the legal question before the court, the evidence already available, the procedural history of the case, the relevance and necessity of the proposed examination, and the consequences for the individuals involved. For forensic scientists, the lesson is equally important: good forensic science begins with a well-defined question.
"Is this scientific examination necessary to resolve the legal controversy before the Court?"
DNA is a powerful forensic tool — but the decision to use it in litigation depends on the legal question, evidentiary context and necessity of the examination, not simply on the availability of the technology.
