Yes, a heavy-metal poison can be asked as a 10-marker, but I would prepare it as a medium-probability topic, not the single highest prediction.
RGUHS is more likely to ask a specific poison rather than a broad question titled “heavy metal poisoning”, for example:
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Arsenic poisoning - highest chance among heavy metals
- Acute poisoning can come as a case of vomiting, diarrhoea, shock-like presentation
- Prepare clinical features, treatment, postmortem findings, and medicolegal importance.
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Chronic lead poisoning - possible, but slightly lower probability
- The January 2025 paper already included “clinical features of chronic lead poisoning” as a short-answer area. So it could recur as a case or 5-marker, but a direct 10-marker immediately after that is less likely.
-
Mercury poisoning - possible but lower than arsenic and lead
- Prepare chronic mercury poisoning, erethism, gingivitis/stomatitis, tremors, treatment, and medicolegal points.
The forensic textbook’s long-essay question bank specifically includes both chronic lead poisoning and chronic mercury poisoning as essay-worthy questions, and it also frames arsenic poisoning as a full essay on clinical features, postmortem findings, and medicolegal importance. The Essentials of Forensic Medicine and Toxicology, 36th ed., long-essay question sections.
My priority ranking for 2026 toxicology 10 marks
- Organophosphorus poisoning
- Arsenic poisoning
- Snakebite or general management of poisoning
- Corrosive poisoning
- Chronic lead poisoning
- Mercury poisoning
So, yes: do prepare heavy metals, but do it strategically:
- Learn arsenic fully as a 10-mark answer.
- Learn chronic lead poisoning as a strong 5-marker that can be expanded to 10 marks.
- Keep mercury as backup.
For lead, use this 10-mark answer framework: sources/exposure -> toxic dose -> acute and chronic features -> Burtonian line, wrist/foot drop, anaemia and abdominal colic -> investigations -> treatment with chelation -> postmortem findings -> medicolegal importance.