Specimen preparation Specimen preparation with a standardized method is highly recommended for microscopical analysis . Specimen of choice Specimen of choice is t…
Microorganisms and other elements Microorganisms Bacteria The urinary infection is the most frequently observed anomaly in urinary microscopy. The presence o…
Confirmatory tests Introduction The aim of these tests is to confirm the identity of crystals. These tests are rarely used, and only if indicated by a clinical …
Uric acids and amorphous urates Uric acid Uric acid crystallizes in the orthorombic system. Uric acid crystals can appear under several shapes. The classic…
Iatrogenic crystalluria The presence of iatrogenic crystals is a rare event. Except for the Indinavir crystal, a light crystalluria due to a medication or from a…
Rare crystals Cystine The cystine is seen as colorless hexagonal plates. The solubility of the cystine is much larger in alkaline urine, with…
Calcium oxalates In the urinary sediment, one can find two forms of calcium oxalate crystals. The most frequent form is the di-hydrated calcium oxa…
Phosphate crystals Amorphous phosphates Amorphous phosphates is the name given to a granular precipitate containing calcium and phosphate in an al…
About crystals Clinical significance Except for the cystine crystals and a few others, the majority of crystals found in the urinary sediment are of l…
The blood casts About blood casts Blood casts are of prime clinical significance. Even a rare finding is indicative of renal "glomerular" blee…
Miscellaneous casts Type II granular casts Granular casts (type II) are described by Lindner as hyaline matrix casts filled with granules similar t…