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AUBF2 > Normal Urinary Crystals > Flashcards

Normal Urinary Crystals Flashcards

1
Q

APPEARANCE: “Thorny Apples” –Spicule covered
spheres; Brown in color

Urine pH: Acid

A

AMMONIUM BIURATE

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2
Q

APPEARANCE: Yellow-Brown Granules

Urine pH: Acid

A

AMORPHOUS URATES

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3
Q

Most often encountered in: Old Specimen

▪ Associated with Ammonia produced by Urea Splitting Bacteria

A

AMMONIUM BIURATE

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4
Q

Urine pH: Acid / Neutral / Alkaline

A

CALCIUM OXALATE

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5
Q

This is Colorless, Octahedral envelope or as two pyramids joined at their base and this is the most common form.

A

DIHYDRATE

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6
Q

This is Oval or Dumbbell shaped

Ethylene Glycol “Antifreeze” Poisoning

A

MONOHYDRATE

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7
Q

Majority of renal calculi is composed of ?

A

CaOx or Calcium Oxalate

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8
Q

Urine pH: Acid
APPEARANCE: Rhombic, Four–sided flat plates
[whetstones], Wedges, Rosettes

A

URIC ACID

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9
Q

HIGHLY BIREFRINGENT: Distinguishing feature from Cystine Crystals

A

Uric Acid

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10
Q

This is significantly increased in Gout and Lesch-Nyhan Syndrome

A

Uric Acid

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11
Q

Urine pH: Alkaline

APPEARANCE: Similar to Amorphous Urates
[distinguished by Urine pH]

A

AMORPHOUS PHOSPHATE

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12
Q

Refrigeration: White Sediment

A

AMORPHOUS PHOSPHATE

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13
Q

When refrigerated it gives Pink Sediment

A

Amorphous Urates

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14
Q

Urine pH: Alkaline

APPEARANCE: Small, Colorless, Dumbbell of Spherical
shapes

A

CALCIUM CARBONATE

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15
Q

Resembles AMORPHOUS MATERIAL – distinguished by addition of ACETIC ACID [formation of gas]

A

CALCIUM CARBONATE

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16
Q

Dissolves at 60 degC and convert into Uric Acid
Crystals when Glacial Acetic Acid is added

A

AMMONIUM BIURATE

17
Q

Urine pH: Alkaline

APPEARANCE: Colorless, Flat rectangular plates, Thin
prisms in rosette form

A

CALCIUM PHOSPHATE

18
Q

This crystal is confused with sulfonamide crystals when urine pH is in neutral range

A

CALCIUM PHOSPHATE

19
Q

Distinguished by addition of DILUTE ACETIC ACID: Calcium Phosphate

A

It dissolves

20
Q

Distinguished by addition of DILUTE ACETIC ACID: Sulfonamide

A

It does not dissolve

21
Q

a.k.a. “Ammonium Magnesium Phosphate”

A

TRIPLE PHOSPHATE

22
Q

Urine pH: Alkaline

APPEARANCE: Prism Shape, resembles “Coffin Lid”

A

TRIPLE PHOSPHATE

AUBF2 (11 decks)

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