Ketone bodies are normally present in blood at relatively low concentrations and increase markedly during prolonged fasting, uncontrolled diabetes and other states of enhanced fatty-acid oxidation. The first range is the intended normal value among the options supplied.
Regarding the normal ketone body level in human is as under:
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Question context
This question is part of 🧬 Biochemistry within the broader 🧬 Medical Science subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.