Urine Microscopy Crystals Uric Acid crystals: - Formation promoted by acidic urine - Seen in tumor lysis syndrome Calcium phosphate crystals: - Formation promoted by alkaline urine - Not suggestive of any specific systemic disease Magnesium ammonium phosphate (a.k.a. struvite or "triple phosphate") crystals: - Formation promoted by alkaline urine - Seen in UTIs by urease-producing organisms (e.g. Proteus, Klebsiella) Calcium oxalate dihydrate crystals: - Formation is largely independent of urine pH - Not suggestive of any specific systemic disease Calcium oxalate monohydrate crystals: - Formation is largely independent of urine pH - Seen in ethylene glycol ingestion Cystine crystals: - Formation promoted by acidic urine - Diagnostic of cystinuria Dr. Eric Strong @DrEricStrong - Strong Medicine https://www.youtube.com/c/EricsMedi #Urine #Microscopy #Crystals #comparison #table #urinalysis
