NDPS Negative FSL Report: What Happens to the Quantity When the Analyst Finds Less

A drug case often turns on a single document that arrives months after the arrest: the forensic laboratory’s report. When it comes back clean, or shows that only part of the seized bulk contained a narcotic, one question follows at once. What happens to the quantity? The NDPS negative FSL report quantity question matters because the whole structure of the Narcotic Drugs and Psychotropic Substances Act, 1985 (NDPS Act) runs on quantity: the punishment band, and the bail bar in section 37. This article explains how a negative or partial report bears on each, what the Supreme Court has and has not decided, and where the argument is weak.

Why Does Quantity Matter so Much in an NDPS Case?

The Act grades offences by quantity. Section 2(xxiiia) defines “small quantity” and section 2(viia) defines “commercial quantity”, each by reference to a notified table. The table in force was issued on 19 October 2001 (S.O. 1055(E)) and has been added to since. For heroin, for instance, the table shows 5 grams as the small quantity and 250 grams as the commercial quantity; the scanned gazette is hard to read, so any figure used in a real case must be checked against the notification for that substance. The offence provisions then attach heavier punishment to the commercial band.

Quantity also controls bail. Section 37(1)(b) bars release in commercial-quantity cases unless the Public Prosecutor has been heard and the court is satisfied that there are reasonable grounds for believing the accused is not guilty and will not offend on bail. Our companion article on NDPS section 37 bail sets out that test. The point here is simpler: if the commercial quantity is not made out, the section 37 bar is in doubt, and the ordinary law of bail may apply instead.

What Does the Analyst’s Report Actually Decide?

To understand how an NDPS negative FSL report affects the quantity involved, it helps to separate three situations that are often confused.

The first row is where many accused persons first go wrong. In E. Micheal Raj v. Intelligence Officer, NCB, (2008) 5 SCC 161, a two-judge bench held that only the pure narcotic content of a mixture counted. On the facts, two samples from packets totalling about 4 kg showed purity of 1.4 and 1.6 per cent, and the quantity was reckoned at roughly 60 grams. That approach was rejected by a three-judge bench in Hira Singh v. Union of India, decided on 22 April 2020. The Court held Micheal Raj was not good law, that the neutral substance is not excluded and is taken together with the actual drug, and that the later note to the notification (S.O. 2942(E), 18 November 2009) is clarificatory. Where a mixture contains several drugs, the lesser of the quantities applies. The Supreme Court reaffirmed this in Intelligence Officer v. Naushad K.K. in November 2022, on the strength of a news report that we have not checked against the judgment.

So a low purity report does not rescue the accused. What Hira Singh does not decide is the position when the laboratory says that a particular packet or lump contained no narcotic at all. That is not a mixture with a high proportion of neutral material; it is material the laboratory has found is outside the Act. The statutory language ties the offence and the table to the narcotic drug or psychotropic substance, or to a preparation or mixture of it. On that language, the weight of material proved to contain none should not be added in.

NDPS Negative FSL Report Quantity: What the Courts have Said

The effect of a negative or partial FSL report on the determination of NDPS quantity has not been conclusively settled by the Supreme Court. We did not find a Supreme Court decision that directly fixes the commercial quantity threshold based on the portion of seized material confirmed by the laboratory. The closest guidance comes from a Delhi High Court bail order, Manjay Kumar v. State (NCT of Delhi), pronounced on 19 March 2026 by Prateek Jalan J. In that case, material had been weighed together with branches, leaves and grass-like matter, and samples appeared to have been drawn collectively from several packets. The Court said that only the drug’s own weight counts, that sampling each packet separately is the expected practice, and that doubt whether the quantity crossed the commercial limit cast doubt on the twin conditions. It then granted bail on a prima facie view. It is a single-judge decision, expressly provisional, and it is not binding in Gujarat. We found no Gujarat High Court ruling on the point.

The Supreme Court’s own sampling decisions point the same way without deciding the question. In Noor Aga v. State of Punjab (9 July 2008), the Court stressed that the Act’s procedures are stringent and must be strictly followed, and treated unexplained discrepancies in sample weights and missing duplicate samples as creating cumulative doubt. In Simarnjit Singh v. State of Punjab (9 May 2023) and Yusuf @ Asif v. State, 2023 INSC 912 (13 October 2023), samples taken without the Magistrate’s involvement under section 52A deprived the prosecution of primary evidence. In Mohammed Khalid v. State of Telangana, 2024 INSC 158 (1 March 2024), an acquittal followed where the sample count was inconsistent and the stated weight of ganja was doubtful because chillies were also in the bags.

What Does the Prosecution Say in Reply?

Balance matters here, because several recent decisions run the other way. In Narcotics Control Bureau v. Kashif, 2024 INSC 1045 (20 December 2024), the Supreme Court held that delay or lapse in complying with section 52A is by itself a procedural irregularity that neither vitiates the trial nor entitles the accused to bail, and that recording the section 37 findings is a precondition for any bail order. A report of December 2025 on Jothi v. State (2025 INSC 1417) says that deviations from section 52A matter only where they raise reasonable doubt about the integrity of the seizure; we have not read the judgment and mention it only as a lead.

The prosecution can also argue that the accused is attacking the wrong target. In State v. Mushtaq Ahmad (6 October 2015), the Supreme Court restored a commercial-quantity conviction for charas after the High Court had scaled it down by projecting the active content from a single sample; on the High Court’s own percentages, the quantity was still commercial. A court may therefore be reluctant to discount a seizure by arithmetic unless the laboratory evidence is clear.

How can the Report be Put in Issue?

• At the bail stage. Obtain the negative FSL report, the seizure memo and the sampling record. Compare the quantity seized with the quantity confirmed by the laboratory and show how the findings affect the commercial quantity threshold and the applicability of section 37.
• At the charge stage. If the report excludes the commercial quantity, the charge framed under the commercial band can be questioned. A court at this stage will not hold a mini-trial, so the argument must rest on the prosecution’s own documents.
• At trial. Cross-examine the analyst and the officer who drew the samples. A government expert’s report may be received without formal proof, but the court may summon the expert under the provision corresponding to section 293 of the old Code of Criminal Procedure, and the defence can ask for that.
• Sampling questions. Ask whether samples were drawn from every packet or from a mixed lot, who drew them, whether a Magistrate certified them, and whether the weight at the laboratory matches the weight at the spot.

One caution on re-testing. A prosecution that finds its first report unhelpful cannot expect a fresh test as of right. A reported High Court decision from Jammu and Kashmir has said that re-testing is allowed only in exceptional, proved circumstances; we have seen only a news report of it and do not rely on it.

Open Questions

Three points remain open. First, no Supreme Court authority fixes the effect of a partial negative report on the commercial threshold, so the High Courts’ approach is persuasive only. Second, the tension between strict sampling cases such as Simarnjit Singh and Yusuf and the more forgiving Kashif line has not been resolved. Third, the sampling rules and standing instructions in force today, and whether newer rules have displaced the older standing order, should be checked against the current Gazette before any filing.

Frequently Asked Questions

What is a negative FSL report in an NDPS case?

It is a forensic science laboratory report stating that the sample tested did not contain a narcotic drug or psychotropic substance. A report can be wholly negative, or negative for some samples only.

Does a negative report mean the case ends?

Not automatically. The prosecution can argue that the sample was not representative or that other samples were positive. A report negative for every properly drawn sample from the seizure usually leaves no narcotic to prosecute.

Does low purity reduce the quantity?

No. For a mixture, the Supreme Court held in Hira Singh (2020) that the weight of neutral substance is counted with the drug, so low purity does not lower the category.

Can I get bail if the commercial quantity is not proved?

If the quantity proved falls below the commercial limit, section 37 may not apply and the ordinary law of bail governs. A Delhi High Court order of 2026 reasoned this way, but it is a single-judge decision and not binding in Gujarat.

Do mistakes in sampling automatically free the accused?

No. The Supreme Court held in Kashif (2024) that delay in section 52A compliance is a procedural irregularity, though other decisions have acquitted where samples were not drawn as the law requires.

Sources

• Narcotic Drugs and Psychotropic Substances Act, 1985, sections 2(viia), 2(xxiiia), 37 and 52A; notification S.O. 1055(E), 19 October 2001 — Narcotics Control Bureau; text of the Act at India Code.
• E. Micheal Raj v. Intelligence Officer, NCB, (2008) 5 SCC 161, 11 March 2008 — judgment.
• Hira Singh v. Union of India, Supreme Court, 22 April 2020 (three judges) — judgment; Intelligence Officer v. Naushad K.K., November 2022 — report.
• Noor Aga v. State of Punjab, 9 July 2008 — judgment.
• Simarnjit Singh v. State of Punjab, 9 May 2023 — judgment; Yusuf @ Asif v. State, 2023 INSC 912, 13 October 2023 — judgment.
• Mohammed Khalid v. State of Telangana, 2024 INSC 158, 1 March 2024 — judgment.
• Narcotics Control Bureau v. Kashif, 2024 INSC 1045, 20 December 2024 — judgment.
• State v. Mushtaq Ahmad, 6 October 2015 — judgment.
• Manjay Kumar v. State (NCT of Delhi), Delhi High Court, 19 March 2026 — order.
• Jothi v. The State, 2025 INSC 1417 (lead only, judgment not read) — report.