This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment & Nutritional Pathology, Subject name: Pathology
[{'content': 'Figlu test is done for \nSelect and explain. \nA. Cyanocobalamine deficiency, B. Folic acid deficiency, C. Thiamine deficiency, D. Riboflavin deficiency', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) (Folic acid deficiency) (285- Harshmohan 7th)A. Test for Folate deficiency - forminoglutamic acid (FIGLU) urinary excretion1. Urinary excretion of FIGLU2. Serum folate assay3. Red cell folate assayNormal range of serum folate is 6-18 ng/ml (value 4 or Less is diagnostic)B Test for vitamin B12 deficiency1. Serum vitamin B12 assay2. Shilling test" (Radio-isotop absorption test)3. Serum enzyme levelsC Thiamine deficiency - transketolase levels in blood', 'role': 'assistant'}]