Forensic toxicology: practice question

A Forensic Medicine question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Forensic Medicine · Forensic toxicology

Sample item

Why are two blood samples sometimes collected for alcohol analysis?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

D. Allow independent confirmation and preserve evidence

Duplicate properly preserved samples allow confirmatory analysis and protect evidential integrity if one sample is challenged or needs retesting.

Option by option

  • A. Replace chain-of-custody documentation

    Chain of custody remains essential.

  • B. Avoid using preservatives

    Preservatives can prevent fermentation.

  • C. Increase the alcohol concentration

    Collection does not change concentration intentionally.

  • D. Allow independent confirmation and preserve evidence (correct)

    Correct: duplicate samples support verification.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

More Forensic Medicine questions

Questions about this Forensic Medicine question

What is the answer to this Forensic Medicine question?

The best answer is D, Allow independent confirmation and preserve evidence. Duplicate properly preserved samples allow confirmatory analysis and protect evidential integrity if one sample is challenged or needs retesting.

Why is "Replace chain-of-custody documentation" not the answer?

Chain of custody remains essential.

Why is "Avoid using preservatives" not the answer?

Preservatives can prevent fermentation.

Why is "Increase the alcohol concentration" not the answer?

Collection does not change concentration intentionally.

What concept does this question test?

It tests Forensic toxicology in Forensic Medicine. The correct option holds because: Correct: duplicate samples support verification.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Forensic toxicology?

Learn postmortem changes with their timelines, and toxicology as poison, sign, test and antidote. Then use the flashcards and the other Forensic Medicine questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.