Crystalluria on Leukoformula

Uric Acid Crystals in Urine Sediment Microscopy

Tue, 11 Aug 2026 13:58:39 +0300

Uric acid crystals! 🙏 The image was kindly provided by clinical laboratory diagnostics physician Masha Roldugina, Moscow

Calcium Oxalate Crystals in Urinalysis: Morphology and Significance

Thu, 18 Jun 2026 08:00:00 +0300

Calcium Oxalate Salts in Urine

🙏 This publication was kindly provided by Ilya Sergeenko, Laboratory Assistant of the on-duty laboratory of PCHH, Belarus, Polotsk

Calcium Oxalate Crystals in Urine Sediment: Morphology

Thu, 04 Jun 2026 08:00:00 +0300

Salts - oxalates in urine sediment.

🙏 The publication was kindly provided by KDL physician Nana Novikova, CHUZ “KB” RZHD-Meditsina", Smolensk.

Uric Acid Crystals in Urine Analysis: Microscopy

Wed, 22 Apr 2026 08:00:00 +0300

Uric acid crystals in acidic urine. Visually, uric acid sediment has a reddish tint, unlike the pink of its salts, urates; under the light of a microscope lamp, sediment with a large number of such crystals may have a slight sheen. Uric acid crystals are characterized by pronounced polymorphism; in this case, their form is predominantly represented by leaf-like scales, which are capable of strongly adhering to each other, forming bizarre conglomerates that change their pattern when the fine adjustment knob is rotated.

Phosphate Crystals in Urine Sediment: Microscopy

Tue, 21 Apr 2026 08:00:01 +0300

Phosphates in urine sediment. Numerous phosphate crystals are visible in the photographs, lying individually as thin needles, or grouped into stellar forms.

🙏 Material kindly provided by medical laboratory technician of Neva Clinic Elisey Zhigulev, Ulyanovsk

Uric Acid Crystals in Urine Sediment: Microscopy

Mon, 13 Apr 2026 08:00:00 +0300

Uric Acid Crystals

🙏 This publication was kindly provided by Aza Akchurina

Urine Sediment Microscopy: Triple Phosphate Crystals

Tue, 07 Apr 2026 12:00:00 +0300

🔬 Triple Phosphate Crystals or “Coffin Lids” ⚰

🙏 This publication was kindly provided by biologist Karina Bikasheva, Luhansk People’s Republic.

Uric Acid Crystals in Urine Sediment Microscopy

Tue, 31 Mar 2026 08:00:00 +0300

When examining urine, uric acid crystals 🔬 were found (with an interesting rolling pin-like shape 🔥)

🙏 The publication was kindly provided by Anastasia Kuzmina

Uric Acid Crystals in Complete Urinalysis

Fri, 27 Mar 2026 08:00:00 +0300

From the series “nothing superfluous” Complete Urinalysis. Uric Acid Crystals

🙏 Photos and description kindly provided by KDL biologist Yulia Guseva, GBUZ Belorechenskaya Central District Hospital.

Uric Acid Crystals in Urinalysis: Microscopy Features

Sat, 07 Mar 2026 09:00:00 +0300

URIC ACID CRYSTALS in the urine sediment of a patient from the rheumatology department.

🙏 This publication was kindly provided by KDL physician Nana Novikova, CHUZ “KB” RZHD-Meditsina", Smolensk.

Uric Acid Crystals in Urine Sediment Microscopy

Mon, 02 Mar 2026 12:00:02 +0300

🔬 Uric acid crystals in urine sediment. 🙏 The publication was kindly provided by laboratory assistant Alsu Akhmetova, Kazan.

Triple Phosphate Crystals in Urine Sediment: Struvite Morphology

Sat, 21 Feb 2026 08:00:00 +0300

Huge triple phosphate (struvite) crystals in their classic “coffin-lid” shape, amorphous phosphates, 2-3 unaltered red blood cells in urine sediment with pH 7.5. Patient from a neurological department.

Uric Acid Crystals in Urinalysis: Microscopy

Mon, 16 Feb 2026 09:00:01 +0300

Growing uric acid crystals are pale yellow. pH 5.5. Viewed on a URIT urine workstation.

🙏 Photos kindly provided by Inna Storozheva, Clinical Diagnostic Laboratory of the Regional Hospital, Kaliningrad.

Uric Acid Crystals in Urine Sediment: Microscopy

Wed, 11 Feb 2026 08:00:00 +0300

Uric acid crystals in urine sediment. Magnification ×400 and ×100

🙏 The publication was kindly provided by clinical laboratory diagnostics physician Oksana Petrovskaya, St. Petersburg

Cystine Crystals in Urine Sediment: Microscopy in Cystinuria

Wed, 17 Dec 2025 11:30:00 +0300

Cystine crystals in dog urine

🙏 The publication was kindly provided by veterinary laboratory assistant, cytologist Ekaterina Shchetnikova Tiger Veterinary Clinic, Kyshtym.

Diagnostic Challenge: Identifying Salts in Urine Sediment

Thu, 16 Oct 2025 19:48:34 +0300

Anonymous question from a subscriber. Calcium oxalate or another salt in urine sediment?

Triple Phosphate Crystals in Alkaline Urine Sediment

Thu, 14 Aug 2025 10:36:00 +0300

🔬 Triple phosphates in alkaline urine.

🙏 Photo kindly provided by laboratory diagnostics physician Alenushka Shoster, CMSS 91, Lesnoy.

Uric Acid Crystals in Complete Urinalysis: Microscopy

Tue, 29 Jul 2025 21:00:00 +0300

Huge uric acid crystals, visible to the naked eye. Urine. Magnification 400x, 100x, unmagnified

🙏Photos kindly provided by biologist Natalia Morkhova

Microscopy Challenge: Identifying Salts in Urine Sediment

Mon, 21 Jul 2025 11:15:17 +0300

Anonymous question. Help identify the salts!

Ammonium Biurate Crystals in Dog Urine: Causes and Morphology

Thu, 12 Jun 2025 20:30:00 +0300

🔬 Rare biurate crystals in dog urine. In animals, they can appear in liver diseases, as well as due to breed-specific characteristics (Dalmatians, English Bulldogs)

🙏 The publication was kindly provided by Anastasia Samsonova, Nizhny Novgorod

Uric Acid Crystals and Microliths in Urine Sediment

Mon, 09 Jun 2025 10:06:25 +0300

Microscopy of urine sediment. Microliths of uric acid crystals x400 Uric acid enters the body with food and is excreted in urine. High levels of uric acid can cause the formation of uric acid crystals in joints and stones. Uric acid crystals can form large conglomerates – microliths. Uric acid crystals found during microscopic examination are usually yellow, dark yellow, or brownish-yellow.

Crystalluria: Identification of Salts in Urine Sediment

Wed, 28 May 2025 18:00:01 +0300

Anonymous question from a subscriber. Please tell me, what kind of salts are these??? Urine sediment. Magnification 400x

Ammonium Biurate Crystals in Urine Sediment: Microscopy

Fri, 23 May 2025 11:30:00 +0300

🔬 Urine microscopy. Ammonium biurate crystalluria in a dog with acquired liver failure caused by cycasin glycoside intoxication after eating sago palm. Source: Valenciano A. C. - Diagnostic Cytology and Hematology, 2020 Cycasin is a glycoside containing methylhydrazine, which has hepatotoxic and neurotoxic effects. It is found in plants of the genus Cycas, including the sago palm.

Feline Urine Crystals at pH 5.5: A Microscopy Challenge

Fri, 23 May 2025 10:00:02 +0300

Anonymous question from a subscriber. Native feline urine smear. pH 5.5. Can you tell me what these crystals are? After drying under the coverslip, it has a characteristic pattern, a design.

Uric Acid Crystals in Urine Sediment: Microscopy

Tue, 15 Apr 2025 08:52:57 +0300

🔬 Urine Sediment Microscopy. 💎 Uric Acid Crystals. 🙏 Photos kindly provided by Kristina Yurievna, Laboratory Diagnostics Physician, BU “RCB”, Cheboksary

Cholesterol Crystals in Urine: Sediment Microscopy

Tue, 08 Apr 2025 16:30:00 +0300

Microscopy of urine sediment. Cholesterol crystals. Patient 62 years old, Department of Nephrology and Hemodialysis.

🙏 Photos and description kindly provided by biologist Anna Feditskaya, Luhansk

Neutral Calcium Phosphate Crystals in Urine Sediment

Tue, 08 Apr 2025 10:00:00 +0300

Microscopy of urine sediment. Neutral calcium phosphate crystals. Magnification x400. 🙏 Photos kindly provided by KDL biologist Yulia Guseva, Belorechenskaya Central District Hospital.

Acid Ammonium Urate Crystals in Urine Sediment

Mon, 31 Mar 2025 14:00:00 +0300

🔬 Acid ammonium urate crystals. Native preparation, ×400 magnification

This publication was kindly provided by medical laboratory technician Yulia Podobreeva, Khabarovsk

Cystine Crystals in Urine Sediment Microscopy

Mon, 31 Mar 2025 13:00:01 +0300

🔬 Urine sediment microscopy. Cystine crystals. pH 6.5 Mag.x400

🙏 The publication was suggested by medical laboratory technician Kristina Litvinenko, Yuzhno-Sakhalinsk.

Uric Acid Crystals in Urine Sediment: Microscopy

Mon, 31 Mar 2025 09:58:52 +0300

🔬 Uric acid crystals, 400x magnification. Urine, pH 5.5.

🙏 Photos kindly provided by laboratory assistant Alina Semenova, Krasnoyarsk, KMB No. 5.