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: Gynaecology & Obstetrics
[{'content': 'Nile blue sulphatase test in amniotic fluid is for the following: \nSelect and explain. \nA. Lung maturity, B. Kidney maturity, C. Liver maturity, D. Skin maturity', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Centrifuged cells in amniotic fluid stained with 0.1% Nile blue sulphatase shows orange blue colouration of the cells. The discolouration is due to presence of exfoliated fat containing cells from sebaceous glands of the skin of the fetus. It is an indicator of skin maturity of the fetus. This test usually used for the diagnosis of premature rupture of membranes. Ref: Textbook of Obstetrics by D C Dutta, 6th edition, Page 317.', 'role': 'assistant'}]