<s>[INST] My three year old son uses the potty. I noticed a linguini-like, grey substance floating in urine. It is about 15 cm long, 5 mm wide and 1mm thick. Could it be part of a parasite? I have removed the sample and put it in water. Our clinics will be closed for two days. Could it preserve long enough to be analyzed? [/INST] Hello,Most probably it is a parasitic worm. It is better to do the test for the sample as soon as possible. If it is not possible, then please put the sample in a tightly closed container in the fridge.Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Salah Saad Shoman </s>