This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
Urine appears 'Liquid Gold' in which poisoning: 
Select and explain. 
A. Heavy metals, B. Barbiturate(Amphetamine), C. Organophosphorous, D. Lead poisoning
B: Barbiturate(Amphetamine)
Answer: B: Barbiturate(Amphetamine) 
Explanation: B i.e. Barbiturate Barbiturate poisoning presents with features of shock i.e. hemo-concentration & oliguriaQ, therefore the urine is highly concentrated & deep yellowQ. I think this could very well mean 'Liquid gold'. Liquid gold is a slang used for urine of amphetamine addictsQ, which is collected and sold because 40% of amphetamine is excreted unchanged in urine.