Amorphous urates are non-crystalline forms of uric acid that can be found in urine samples. They are not considered a sign of any medical condition but can indicate dehydration or acidic urine. Presence of amorphous urates can be influenced by diet and hydration levels.
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Isoprene is a liquid at room temperature and pressure, so it is neither amorphous nor crystalline.
Amorphous solids are non-crystalline solids that lack the long-range order of crystal structures. Even amorphous solids have some short-range order.
Rare amorphous urates in urine indicate the presence of uric acid crystals that are not well-defined in shape. This finding is usually not clinically significant, but it can be associated with conditions like dehydration or a diet high in purines. It is important to correlate these findings with other clinical information for proper interpretation.
Amorphous urates are normal in urine. There are several types of amorphous crystals, each composed of different elements and forming in specific urine conditions. Amorphous crystals are misidentified as bacteria.
Amorphous Urates indicates uric acid crystals in the urine. Higher than acceptable levels of uric acid crystals in urine can be caused by gout, Lesch-Nyhan syndrome, cardiovascular disease, diabetes, uric acid stone, urolithiasis, and metabolic syndrome.
Urates typically form as yellow or orange-brown crystals that settle out of unrefrigerated urine samples, while phosphates form as white crystals. The exact shape of these crystals can vary, but urates often appear as needles or rhomboids, while phosphates can be more amorphous in shape.
Amorphous Crystals ¤Amorphous urates are found in acid urine. These crystals may appear pink on gross analysis and yellow microscopically (Figure 2-12). These crystals appear as granules in the urine sediment. Amorphous phosphates are found in alkaline urine. These granules are colorless microscopically and also appear granular when viewed microscopically. Occasionally amorphous material may appear in clumps or masses. It may be difficult to distinguish amorphous crystals from bacteria since they may be of the same size when viewed microscopically. However, amorphous crystals are soluble in opposing acid or alkaline solution; bacteria will not. Amorphous urates will also dissolve when heated. cited from: http://www.tetonnm.com/pics/MESSamplePages/1-893441-10-5.pdf retrieved 4/11/2009
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Urates are salts of uric acid that are commonly found in the urine. They can form crystals, which may lead to the development of kidney stones in some individuals. High levels of urates in the blood can also be associated with conditions like gout.
The stool, urates and urine
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