Sediment Identification Flashcards
RBCs
WBCs
WBCs
WBCs
clue cells
SECs
SECs + bilirubin
transitional cells
transitional cells
transitional cells
RTEs
RTEs
RTE
RTE
RTE collecting duct
OFB
OFB
yeast
pseudohyphae
Trichomonas
parasite ovum
hyaline casts
RBC casts
WBC casts
WBC casts
bacterial cast
RTE cast
RTE casts
mixed cast
granular casts
waxy cast
waxy cast
fatty cast
broad casts
amorphous urates
uric acid
uric acid
uric acid
acid urates
sodium urates
calcium oxalate (dihydrate, monohydrate)
calcium oxalate
monohydrate
amorphous phosphates
triple phosphate
triple phosphates
calcium phosphate
calcium carbonate
ammonium biurate
cystine
cholesterol
cholesterol
leucine
tyrosine
bilirubin
radiographic dye
sulfa crystals
ampicillin crystals
hemosiderin
hippuric acid
starch
pollen
SEC appearance
Thin, flat having “flagstone” appearance, distinct edges
Small, centrally located nucleus with small amount of cytoplasm (fried egg appearance)
Can also be anucleated.
Fine granulation in cytoplasm
transitional cells appearance
Centrally located nucleus
Round or pear-shaped with a dense oval-to-round nucleus
Abundant cytoplasm- nucleus to cytoplasm ratio is 1:5
The peripheral borders of the nucleus and cytoplasm are distantly outlined.
RTE appearance
Eccentrically placed nucleus (not easily visible in unstained sediment)
Nucleus to cytoplasm ratio 1:1
collecting duct: cuboidal, at least one straight edge
OFB appearance
Highly refractile due to absorbed lipids
Positively identified using polarized microscopy
Maltese cross formation
Trich appearance
Pear-shaped flagellate with undulating membrane
cast appearance
Cylindrical with parallel sides, vary in length and width
Ends may be round, blunt, or broken
amorphous urate appearance
Yellow-brown sand-like granules
Clumps or attached to other structures
Pink sediment (uroerythrin)
uric acid appearance
Rhombic
Four-sided flat plates (whetstones)
Wedges
Rosettes
Six-sided
Yellow-brown or colorless
Highly birefringent under polarized light
acid urates appearance
Larger granules
Spicules
sodium urates appearance
Needle-shaped
amorphous phosphate appearance
Fine, colorless sand-like granules
White sediment
triple phosphate appearance
Prism, coffin lid shape
Colorless
Size varies
Feathery as they disintegrate
Birefringent under polarized light
calcium phosphate appearance
Colorless, flat rectangular plates
Thin prisms often in rosette formations
Float on top of urine
calcium carbonate appearance
Small and colorless granules
Dumbbell (in pairs) or spherical shapes
Clumps
ammonium biurate appearance
Yellow-brown color spheres
Spicule covered spheres “Thorny-apples”
cystine appearance
Colorless, hexagonal plates
cholesterol appearance
Rectangular plate with a notch in one or more corners
stairs
leucine appearance
Yellow-brown spheres
Concentric circles and radial striations
tyrosine appearance
Fine, colorless to yellow needles
Clusters or rosettes
bilirubin appearance
Clumped needles
Granules with amber color of bilirubin
radiographic dye appearance
Colorless, long pointed needles
Flat, long rectangular plates
sulfa crystals appearance
Needles
Rhombic
Whetstones
Sheaves of wheat
Rosettes
Colorless to yellow-brown
ampicillin appearance
Colorless needles that tend to form bundles after refrigeration
hemosiderin appearance
Coarse, yellow-brown “iron” granules
Prussian blue stain (blue granules)
hippuric acid appearance
Yellow-brown or colorless
Elongated prisms or plates
pointed ends
starch appearance
Spheres with a dimpled center
Highly refractile
maltese cross