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/EricsMedicalLectures/

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