What causes struvite stones? Struvite stones are caused by an upper urinary tract infection (UTI) from bacteria. Ammonia produced as a waste product by the bacteria can make the urine less acidic (or more alkaline). Struvite stones form when the urine becomes more alkaline.

What is struvite made of?

Struvite stones are a common type of urinary or kidney stones that are made of magnesium ammonium phosphate (MgNHPO4·H2O). They make up around 10 to 15 percent of all kidney stones. Struvite stones are also called infection stones because they are associated with urinary tract infections.

Where is struvite found?

Struvite stones are a type of hard mineral deposit that can form in your kidneys. Stones form when minerals like calcium and phosphate crystallize inside your kidneys and stick together. Struvite is a mineral that's produced by bacteria in your urinary tract.