Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: Thats what I said, but the only stone they can see is, according to them, no bigger than a grain of sand. The doctor I saw last night also said that I didn't have a UTI. I've had the crystals and blood in my urine every single UA since December.. ### Response: You don't have a raging UTI and your culture is negative from what I can see. But there are white blood cells in your urine, and bacteria (though no leucocytes/nitrates, which tend to be the classic uti markers). Plus, a high number of epithelial (skin) cells, which indicates sample contamination. So, not anything that warrants treating.And yes, kidney stones can literally be a grain of sand size and cause utter havoc..