Urinalysis Sediment

Clinical Chemistry

All Specimens

Centrifuged urine sediment showing casts, crystals, and cells

Stains: unstained

Images: 3

Compatible Scopes: 9

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3 images

Calcium Oxalate Crystals — Urine Sediment

Unstained urine sediment showing characteristic envelope-shaped (bipyramidal) calcium oxalate dihydrate crystals. These are the most common crystals found in acidic urine. Red blood cells are visible in the background.

unstained Downloaded 2026-03-16

Upright Optical

40× Brightfield Focus 0.5 NA 0.65

Calcium oxalate dihydrate — classic envelope morphology, clinically significant

Wikimedia Commons — CC BY-SA 3.0

Uric Acid Crystals — Urine Sediment

Unstained urine sediment showing uric acid crystals with characteristic rhomboid or rosette morphology. Uric acid crystals are found in acidic urine and may be associated with gout or high purine diet.

unstained Downloaded 2026-03-16

Upright Optical

40× Brightfield Focus 0.5 NA 0.65

Uric acid crystals — rhomboid morphology, acidic urine, may indicate gout

Wikimedia Commons — CC BY-SA 3.0

Urinary Casts — Mixed Types

Urine sediment microscopy showing multiple cast types including renal tubular epithelial (RTE) casts, muddy brown granular casts, WBC casts, and RBC casts. These cylindrical structures form in the renal tubules and indicate kidney pathology.

unstained Downloaded 2026-03-16

Upright Optical

40× Brightfield Focus 0.5 NA 0.65

Multiple cast types — RTE, granular, WBC, RBC casts indicating renal disease

Wikimedia Commons — CC BY-SA 3.0

Compatible Microscopes

Model	Manufacturer	Type	Magnification Range	NA Max	Resolution
DM6 B	Leica Microsystems	Upright Optical	1.25–100×	1.4	200 nm
DMi8	Leica Microsystems	Inverted Optical	2.5–100×	1.47	185 nm
Eclipse Ti2	Nikon	Inverted Optical	2–100×	1.45	190 nm
Eclipse Ni	Nikon	Upright Optical	2–100×	1.4	200 nm
BX53	Olympus (Evident)	Upright Optical	2–100×	1.4	200 nm
IX83	Olympus (Evident)	Inverted Optical	2–100×	1.4	200 nm
Axio Observer 7	Zeiss	Inverted Optical	5–100×	1.4	200 nm
Axio Imager 2	Zeiss	Upright Optical	1.25–100×	1.4	200 nm
Primostar 3	Zeiss	Upright Optical	4–100×	1.25	350 nm

Urinalysis Sediment