urine microscopy
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Indications
- abnormal urine dipstick
- acute kidney injury
- suspicion for glomerulonephritis
- newly diagnosed chronic kidney disease
Procedure
- light microscopy of urine or urine sediment
Interpretation
- pyuria is most frequently caused by urinary tract infection
- isomorphic erythrocytes generally result from tumor, stone or infection
- acanthocytes or erythrocyte casts result from
- glomerulonephritis (most common)
- severe interstitial nephritis
- acute tubular necrosis
- rhabdomyolysis & hemolysis test positive for blood on urine dipstick but do not show erythrocytes in urine upon urine microscopy[1]
- urine lipid or fat is generally associated with the nephrotic syndrome
More general terms
More specific terms
- microorganisms in urine by light microscopy
- other elements in urine sediment by light microscopy
- pyrophosphate crystals in urine sediment
- urine microscopy by rhodamine-auramine fluorochrome stain
Additional terms
References
- ↑ 1.0 1.1 Medical Knowledge Self Assessment Program (MKSAP) 16, American College of Physicians, Philadelphia 2012
Medical Knowledge Self Assessment Program (MKSAP) 19 Board Basics. An Enhancement to MKSAP19. American College of Physicians, Philadelphia 2022 - ↑ Panel of 22 tests Laboratory Test Directory ARUP: http://www.aruplab.com/guides/ug/tests/0020350.jsp
- ↑ Perazella MA, Coca SG, Hall IE, Iyanam U, Koraishy M, Parikh CR. Urine microscopy is associated with severity and worsening of acute kidney injury in hospitalized patients. Clin J Am Soc Nephrol. 2010 Mar;5(3):402-8 PMID: https://www.ncbi.nlm.nih.gov/pubmed/20089493 Free PMC Article
- ↑ Perazella MA, Coca SG, Kanbay M, Brewster UC, Parikh CR. Diagnostic value of urine microscopy for differential diagnosis of acute kidney injury in hospitalized patients. Clin J Am Soc Nephrol. 2008 Nov;3(6):1615-9. PMID: https://www.ncbi.nlm.nih.gov/pubmed/18784207 Free PMC Article