What this page covers
Practice Step 1-style biochemistry questions on Folate deficiency lab pattern (elevated homocysteine, normal MMA), including Pregnant woman, phenytoin, macrocytic anemia, glossitis, normal neuro exam, expected additional labs, with emphasis on metabolic consequence / lab finding and answer-choice reasoning.
How to use this page
Review the topic and reasoning focus, then practice Step 1-style questions inside BiochemStep. The question set emphasizes mechanism-first answer-choice reasoning rather than passive content review.