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Crystalluria refers to crystals found in the urine when performing a urine test. Crystalluria is considered often as a benign condition and as one of the side effects of sulfonamides and penicillins. The main reason for the identification of urinary crystals is to detect the presence of the relatively few abnormal types that may represent a ...
The presence of crystals in the urine has conventionally been associated with the formation of kidney stones, and crystalluria is more common in people with kidney stones than those without. However, crystalluria occurs in up to 20% of the normal population, so it is not a reliable diagnostic marker. [126]
A urine test is any medical test performed on a urine specimen. The analysis of urine is a valuable diagnostic tool because its composition reflects the functioning of many body systems, particularly the kidneys and urinary system , and specimens are easy to obtain. [ 1 ]
Urine typically has a mild odor, but strong or unusual smells can indicate a problem. A strong ammonia scent could suggest dehydration. A foul or unusual smell could be a sign of a urinary tract ...
“If someone has foamy urine and other new or concerning symptoms like blood in the urine, pain when urinating, excessive fatigue, fevers, weight loss, swelling, shortness of breath, or ...
For the identification of dihydroxyadenine crystals, light and polarizing microscopy examination of crystalluria is a very helpful, noninvasive, and reasonably priced method. The most concentrated urine samples come from morning urine voids, which are ideal for studying crystalluria. [26]
A large portion of the crystals in a urine sediment will have this type of morphology, as they can grow at any pH and naturally occur in normal urine. Calcium oxalate monohydrate crystals vary in shape, and can be shaped like dumbbells, spindles, ovals, or picket fences, the last of which is most commonly seen due to ethylene glycol poisoning. [12]
The poorly soluble purine 2,8-dihydroxyadenine is excreted in the urine because of a deficiency in the adenine salvage enzyme adenine phosphoribosyltransferase. The defect is inherited as an autosomal recessive trait ; the homozygous state is associated with high urinary levels of 2,8-dihydroxyadenine and with crystalluria , calculus formation ...